text: /*==================================================
   Copyright (c) 2013-2015 司徒正美 and other contributors
   http://www.cnblogs.com/rubylouvre/
   https://github.com/RubyLouvre
   http://weibo.com/jslouvre/
   
   Released under the MIT license
   avalon.js 1.4.7.2 built in 2016.1.26
   support IE6+ and other browsers
   ==================================================*/
  (function(global, factory) {
  
      if (typeof module === "object" && typeof module.exports === "object") {
          // For CommonJS and CommonJS-like environments where a proper `window`
          // is present, execute the factory and get avalon.
          // For environments that do not have a `window` with a `document`
          // (such as Node.js), expose a factory as module.exports.
          // This accentuates the need for the creation of a real `window`.
          // e.g. var avalon = require("avalon")(window);
          module.exports = global.document ? factory(global, true) : function(w) {
              if (!w.document) {
                  throw new Error("Avalon requires a window with a document")
              }
              return factory(w)
          }
      } else {
          factory(global)
      }
  
  // Pass this if window is not defined yet
  }(typeof window !== "undefined" ? window : this, function(window, noGlobal){
  
  /*********************************************************************
   *                    全局变量及方法                                  *
   **********************************************************************/
  var expose = new Date() - 0
  //http://stackoverflow.com/questions/7290086/javascript-use-strict-and-nicks-find-global-function
  var DOC = window.document
  var head = DOC.getElementsByTagName("head")[0] //HEAD元素
  var ifGroup = head.insertBefore(document.createElement("avalon"), head.firstChild) //避免IE6 base标签BUG
  ifGroup.innerHTML = "X<style id='avalonStyle'>.avalonHide{ display: none!important }</style>"
  ifGroup.setAttribute("ms-skip", "1")
  ifGroup.className = "avalonHide"
  var rnative = /\[native code\]/ //判定是否原生函数
  function log() {
      if (window.console && avalon.config.debug) {
          // http://stackoverflow.com/questions/8785624/how-to-safely-wrap-console-log
          Function.apply.call(console.log, console, arguments)
      }
  }
  
  
  var subscribers = "$" + expose
  var stopRepeatAssign = false
  var rword = /[^, ]+/g //切割字符串为一个个小块，以空格或豆号分开它们，结合replace实现字符串的forEach
  var rcomplexType = /^(?:object|array)$/
  var rsvg = /^\[object SVG\w*Element\]$/
  var rwindow = /^\[object (?:Window|DOMWindow|global)\]$/
  var oproto = Object.prototype
  var ohasOwn = oproto.hasOwnProperty
  var serialize = oproto.toString
  var ap = Array.prototype
  var aslice = ap.slice
  var W3C = window.dispatchEvent
  var root = DOC.documentElement
  var avalonFragment = DOC.createDocumentFragment()
  var cinerator = DOC.createElement("div")
  var class2type = {}
  "Boolean Number String Function Array Date RegExp Object Error".replace(rword, function (name) {
      class2type["[object " + name + "]"] = name.toLowerCase()
  })
  
  
  function noop() {
  }
  
  
  function oneObject(array, val) {
      if (typeof array === "string") {
          array = array.match(rword) || []
      }
      var result = {},
              value = val !== void 0 ? val : 1
      for (var i = 0, n = array.length; i < n; i++) {
          result[array[i]] = value
      }
      return result
  }
  
  //生成UUID http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript
  var generateID = function (prefix) {
      prefix = prefix || "avalon"
      return String(Math.random() + Math.random()).replace(/\d\.\d{4}/, prefix)
  }
  function IE() {
      if (window.VBArray) {
          var mode = document.documentMode
          return mode ? mode : window.XMLHttpRequest ? 7 : 6
      } else {
          return NaN
      }
  }
  var IEVersion = IE()
  
  avalon = function (el) { //创建jQuery式的无new 实例化结构
      return new avalon.init(el)
  }
  
  avalon.profile = function () {
      if (window.console && avalon.config.profile) {
          Function.apply.call(console.log, console, arguments)
      }
  }
  
  /*视浏览器情况采用最快的异步回调*/
  avalon.nextTick = new function () {// jshint ignore:line
      var tickImmediate = window.setImmediate
      var tickObserver = window.MutationObserver
      if (tickImmediate) {//IE10 \11 edage
          return tickImmediate.bind(window)
      }
  
      var queue = []
      function callback() {
          var n = queue.length
          for (var i = 0; i < n; i++) {
              queue[i]()
          }
          queue = queue.slice(n)
      }
  
      if (tickObserver) {// 支持MutationObserver
          var node = document.createTextNode("avalon")
          new tickObserver(callback).observe(node, {characterData: true})// jshint ignore:line
          return function (fn) {
              queue.push(fn)
              node.data = Math.random()
          }
      }
  
      if (window.VBArray) {
          return function (fn) {
              queue.push(fn)
              var node = DOC.createElement("script")
              node.onreadystatechange = function () {
                  callback() //在interactive阶段就触发
                  node.onreadystatechange = null
                  head.removeChild(node)
                  node = null
              }
              head.appendChild(node)
          }
      }
  
  
      return function (fn) {
          setTimeout(fn, 4)
      }
  }// jshint ignore:line
  /*********************************************************************
   *                 avalon的静态方法定义区                              *
   **********************************************************************/
  avalon.init = function (el) {
      this[0] = this.element = el
  }
  avalon.fn = avalon.prototype = avalon.init.prototype
  
  avalon.type = function (obj) { //取得目标的类型
      if (obj == null) {
          return String(obj)
      }
      // 早期的webkit内核浏览器实现了已废弃的ecma262v4标准，可以将正则字面量当作函数使用，因此typeof在判定正则时会返回function
      return typeof obj === "object" || typeof obj === "function" ?
              class2type[serialize.call(obj)] || "object" :
              typeof obj
  }
  
  var isFunction = typeof alert === "object" ? function (fn) {
      try {
          return /^\s*\bfunction\b/.test(fn + "")
      } catch (e) {
          return false
      }
  } : function (fn) {
      return serialize.call(fn) === "[object Function]"
  }
  avalon.isFunction = isFunction
  
  avalon.isWindow = function (obj) {
      if (!obj)
          return false
      // 利用IE678 window == document为true,document == window竟然为false的神奇特性
      // 标准浏览器及IE9，IE10等使用 正则检测
      return obj == obj.document && obj.document != obj //jshint ignore:line
  }
  
  function isWindow(obj) {
      return rwindow.test(serialize.call(obj))
  }
  if (isWindow(window)) {
      avalon.isWindow = isWindow
  }
  var enu
  for (enu in avalon({})) {
      break
  }
  var enumerateBUG = enu !== "0" //IE6下为true, 其他为false
  /*判定是否是一个朴素的javascript对象（Object），不是DOM对象，不是BOM对象，不是自定义类的实例*/
  avalon.isPlainObject = function (obj, key) {
      if (!obj || avalon.type(obj) !== "object" || obj.nodeType || avalon.isWindow(obj)) {
          return false;
      }
      try { //IE内置对象没有constructor
          if (obj.constructor && !ohasOwn.call(obj, "constructor") && !ohasOwn.call(obj.constructor.prototype, "isPrototypeOf")) {
              return false;
          }
      } catch (e) { //IE8 9会在这里抛错
          return false;
      }
      if (enumerateBUG) {
          for (key in obj) {
              return ohasOwn.call(obj, key)
          }
      }
      for (key in obj) {
      }
      return key === void 0 || ohasOwn.call(obj, key)
  }
  if (rnative.test(Object.getPrototypeOf)) {
      avalon.isPlainObject = function (obj) {
          // 简单的 typeof obj === "object"检测，会致使用isPlainObject(window)在opera下通不过
          return serialize.call(obj) === "[object Object]" && Object.getPrototypeOf(obj) === oproto
      }
  }
  //与jQuery.extend方法，可用于浅拷贝，深拷贝
  avalon.mix = avalon.fn.mix = function () {
      var options, name, src, copy, copyIsArray, clone,
              target = arguments[0] || {},
              i = 1,
              length = arguments.length,
              deep = false
  
      // 如果第一个参数为布尔,判定是否深拷贝
      if (typeof target === "boolean") {
          deep = target
          target = arguments[1] || {}
          i++
      }
  
      //确保接受方为一个复杂的数据类型
      if (typeof target !== "object" && !isFunction(target)) {
          target = {}
      }
  
      //如果只有一个参数，那么新成员添加于mix所在的对象上
      if (i === length) {
          target = this
          i--
      }
  
      for (; i < length; i++) {
          //只处理非空参数
          if ((options = arguments[i]) != null) {
              for (name in options) {
                  src = target[name]
                  try {
                      copy = options[name] //当options为VBS对象时报错
                  } catch (e) {
                      continue
                  }
  
                  // 防止环引用
                  if (target === copy) {
                      continue
                  }
                  if (deep && copy && (avalon.isPlainObject(copy) || (copyIsArray = Array.isArray(copy)))) {
  
                      if (copyIsArray) {
                          copyIsArray = false
                          clone = src && Array.isArray(src) ? src : []
  
                      } else {
                          clone = src && avalon.isPlainObject(src) ? src : {}
                      }
  
                      target[name] = avalon.mix(deep, clone, copy)
                  } else if (copy !== void 0) {
                      target[name] = copy
                  }
              }
          }
      }
      return target
  }
  
  function _number(a, len) { //用于模拟slice, splice的效果
      a = Math.floor(a) || 0
      return a < 0 ? Math.max(len + a, 0) : Math.min(a, len);
  }
  
  avalon.mix({
      rword: rword,
      subscribers: subscribers,
      version: 1.472,
      ui: {},
      log: log,
      slice: W3C ? function (nodes, start, end) {
          return aslice.call(nodes, start, end)
      } : function (nodes, start, end) {
          var ret = []
          var len = nodes.length
          if (end === void 0)
              end = len
          if (typeof end === "number" && isFinite(end)) {
              start = _number(start, len)
              end = _number(end, len)
              for (var i = start; i < end; ++i) {
                  ret[i - start] = nodes[i]
              }
          }
          return ret
      },
      noop: noop,
      /*如果不用Error对象封装一下，str在控制台下可能会乱码*/
      error: function (str, e) {
          throw  (e || Error)(str)
      },
      /*将一个以空格或逗号隔开的字符串或数组,转换成一个键值都为1的对象*/
      oneObject: oneObject,
      /* avalon.range(10)
       => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
       avalon.range(1, 11)
       => [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
       avalon.range(0, 30, 5)
       => [0, 5, 10, 15, 20, 25]
       avalon.range(0, -10, -1)
       => [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]
       avalon.range(0)
       => []*/
      range: function (start, end, step) { // 用于生成整数数组
          step || (step = 1)
          if (end == null) {
              end = start || 0
              start = 0
          }
          var index = -1,
                  length = Math.max(0, Math.ceil((end - start) / step)),
                  result = new Array(length)
          while (++index < length) {
              result[index] = start
              start += step
          }
          return result
      },
      eventHooks: [],
      /*绑定事件*/
      bind: function (el, type, fn, phase) {
          var hooks = avalon.eventHooks
          var hook = hooks[type]
          if (typeof hook === "object") {
              type = hook.type || type
              phase = hook.phase || !!phase
              fn = hook.fn ? hook.fn(el,fn): fn
          }
          var callback = W3C ? fn : function (e) {
              fn.call(el, fixEvent(e));
          }
          if (W3C) {
              el.addEventListener(type, callback, phase)
          } else {
              el.attachEvent("on" + type, callback)
          }
          return callback
      },
      /*卸载事件*/
      unbind: function (el, type, fn, phase) {
          var hooks = avalon.eventHooks
          var hook = hooks[type]
          var callback = fn || noop
          if (typeof hook === "object") {
              type = hook.type || type
              phase = hook.phase || !!phase
          }
          if (W3C) {
              el.removeEventListener(type, callback, phase)
          } else {
              el.detachEvent("on" + type, callback)
          }
      },
      /*读写删除元素节点的样式*/
      css: function (node, name, value) {
          if (node instanceof avalon) {
              node = node[0]
          }
          var prop = /[_-]/.test(name) ? camelize(name) : name, fn
          name = avalon.cssName(prop) || prop
          if (value === void 0 || typeof value === "boolean") { //获取样式
              fn = cssHooks[prop + ":get"] || cssHooks["@:get"]
              if (name === "background") {
                  name = "backgroundColor"
              }
              var val = fn(node, name)
              return value === true ? parseFloat(val) || 0 : val
          } else if (value === "") { //请除样式
              node.style[name] = ""
          } else { //设置样式
              if (value == null || value !== value) {
                  return
              }
              if (isFinite(value) && !avalon.cssNumber[prop]) {
                  value += "px"
              }
              fn = cssHooks[prop + ":set"] || cssHooks["@:set"]
              fn(node, name, value)
          }
      },
      /*遍历数组与对象,回调的第一个参数为索引或键名,第二个或元素或键值*/
      each: function (obj, fn) {
          if (obj) { //排除null, undefined
              var i = 0
              if (isArrayLike(obj)) {
                  for (var n = obj.length; i < n; i++) {
                      if (fn(i, obj[i]) === false)
                          break
                  }
              } else {
                  for (i in obj) {
                      if (obj.hasOwnProperty(i) && fn(i, obj[i]) === false) {
                          break
                      }
                  }
              }
          }
      },
      //收集元素的data-{{prefix}}-*属性，并转换为对象
      getWidgetData: function (elem, prefix) {
          var raw = avalon(elem).data()
          var result = {}
          for (var i in raw) {
              if (i.indexOf(prefix) === 0) {
                  result[i.replace(prefix, "").replace(/\w/, function (a) {
                      return a.toLowerCase()
                  })] = raw[i]
              }
          }
          return result
      },
      Array: {
          /*只有当前数组不存在此元素时只添加它*/
          ensure: function (target, item) {
              if (target.indexOf(item) === -1) {
                  return target.push(item)
              }
          },
          /*移除数组中指定位置的元素，返回布尔表示成功与否*/
          removeAt: function (target, index) {
              return !!target.splice(index, 1).length
          },
          /*移除数组中第一个匹配传参的那个元素，返回布尔表示成功与否*/
          remove: function (target, item) {
              var index = target.indexOf(item)
              if (~index)
                  return avalon.Array.removeAt(target, index)
              return false
          }
      }
  })
  
  var bindingHandlers = avalon.bindingHandlers = {}
  var bindingExecutors = avalon.bindingExecutors = {}
  
  /*判定是否类数组，如节点集合，纯数组，arguments与拥有非负整数的length属性的纯JS对象*/
  function isArrayLike(obj) {
      if (!obj)
          return false
      var n = obj.length
      if (n === (n >>> 0)) { //检测length属性是否为非负整数
          var type = serialize.call(obj).slice(8, -1)
          if (/(?:regexp|string|function|window|global)$/i.test(type))
              return false
          if (type === "Array")
              return true
          try {
              if ({}.propertyIsEnumerable.call(obj, "length") === false) { //如果是原生对象
                  return  /^\s?function/.test(obj.item || obj.callee)
              }
              return true
          } catch (e) { //IE的NodeList直接抛错
              return !obj.window //IE6-8 window
          }
      }
      return false
  }
  
  
  // https://github.com/rsms/js-lru
  var Cache = new function() {// jshint ignore:line
      function LRU(maxLength) {
          this.size = 0
          this.limit = maxLength
          this.head = this.tail = void 0
          this._keymap = {}
      }
  
      var p = LRU.prototype
  
      p.put = function(key, value) {
          var entry = {
              key: key,
              value: value
          }
          this._keymap[key] = entry
          if (this.tail) {
              this.tail.newer = entry
              entry.older = this.tail
          } else {
              this.head = entry
          }
          this.tail = entry
          if (this.size === this.limit) {
              this.shift()
          } else {
              this.size++
          }
          return value
      }
  
      p.shift = function() {
          var entry = this.head
          if (entry) {
              this.head = this.head.newer
              this.head.older =
                      entry.newer =
                      entry.older =
                      this._keymap[entry.key] = void 0
              delete this._keymap[entry.key] //#1029
          }
      }
      p.get = function(key) {
          var entry = this._keymap[key]
          if (entry === void 0)
              return
          if (entry === this.tail) {
              return  entry.value
          }
          // HEAD--------------TAIL
          //   <.older   .newer>
          //  <--- add direction --
          //   A  B  C  <D>  E
          if (entry.newer) {
              if (entry === this.head) {
                  this.head = entry.newer
              }
              entry.newer.older = entry.older // C <-- E.
          }
          if (entry.older) {
              entry.older.newer = entry.newer // C. --> E
          }
          entry.newer = void 0 // D --x
          entry.older = this.tail // D. --> E
          if (this.tail) {
              this.tail.newer = entry // E. <-- D
          }
          this.tail = entry
          return entry.value
      }
      return LRU
  }// jshint ignore:line
  
  /*********************************************************************
   *                         javascript 底层补丁                       *
   **********************************************************************/
  if (!"司徒正美".trim) {
      var rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g
      String.prototype.trim = function () {
          return this.replace(rtrim, "")
      }
  }
  var hasDontEnumBug = !({
      'toString': null
  }).propertyIsEnumerable('toString'),
          hasProtoEnumBug = (function () {
          }).propertyIsEnumerable('prototype'),
          dontEnums = [
              "toString",
              "toLocaleString",
              "valueOf",
              "hasOwnProperty",
              "isPrototypeOf",
              "propertyIsEnumerable",
              "constructor"
          ],
          dontEnumsLength = dontEnums.length;
  if (!Object.keys) {
      Object.keys = function (object) { //ecma262v5 15.2.3.14
          var theKeys = []
          var skipProto = hasProtoEnumBug && typeof object === "function"
          if (typeof object === "string" || (object && object.callee)) {
              for (var i = 0; i < object.length; ++i) {
                  theKeys.push(String(i))
              }
          } else {
              for (var name in object) {
                  if (!(skipProto && name === "prototype") && ohasOwn.call(object, name)) {
                      theKeys.push(String(name))
                  }
              }
          }
  
          if (hasDontEnumBug) {
              var ctor = object.constructor,
                      skipConstructor = ctor && ctor.prototype === object
              for (var j = 0; j < dontEnumsLength; j++) {
                  var dontEnum = dontEnums[j]
                  if (!(skipConstructor && dontEnum === "constructor") && ohasOwn.call(object, dontEnum)) {
                      theKeys.push(dontEnum)
                  }
              }
          }
          return theKeys
      }
  }
  if (!Array.isArray) {
      Array.isArray = function (a) {
          return serialize.call(a) === "[object Array]"
      }
  }
  
  if (!noop.bind) {
      Function.prototype.bind = function (scope) {
          if (arguments.length < 2 && scope === void 0)
              return this
          var fn = this,
                  argv = arguments
          return function () {
              var args = [],
                      i
              for (i = 1; i < argv.length; i++)
                  args.push(argv[i])
              for (i = 0; i < arguments.length; i++)
                  args.push(arguments[i])
              return fn.apply(scope, args)
          }
      }
  }
  
  function iterator(vars, body, ret) {
      var fun = 'for(var ' + vars + 'i=0,n = this.length; i < n; i++){' + body.replace('_', '((i in this) && fn.call(scope,this[i],i,this))') + '}' + ret
      /* jshint ignore:start */
      return Function("fn,scope", fun)
      /* jshint ignore:end */
  }
  if (!rnative.test([].map)) {
      avalon.mix(ap, {
          //定位操作，返回数组中第一个等于给定参数的元素的索引值。
          indexOf: function (item, index) {
              var n = this.length,
                      i = ~~index
              if (i < 0)
                  i += n
              for (; i < n; i++)
                  if (this[i] === item)
                      return i
              return -1
          },
          //定位操作，同上，不过是从后遍历。
          lastIndexOf: function (item, index) {
              var n = this.length,
                      i = index == null ? n - 1 : index
              if (i < 0)
                  i = Math.max(0, n + i)
              for (; i >= 0; i--)
                  if (this[i] === item)
                      return i
              return -1
          },
          //迭代操作，将数组的元素挨个儿传入一个函数中执行。Prototype.js的对应名字为each。
          forEach: iterator("", '_', ""),
          //迭代类 在数组中的每个项上运行一个函数，如果此函数的值为真，则此元素作为新数组的元素收集起来，并返回新数组
          filter: iterator('r=[],j=0,', 'if(_)r[j++]=this[i]', 'return r'),
          //收集操作，将数组的元素挨个儿传入一个函数中执行，然后把它们的返回值组成一个新数组返回。Prototype.js的对应名字为collect。
          map: iterator('r=[],', 'r[i]=_', 'return r'),
          //只要数组中有一个元素满足条件（放进给定函数返回true），那么它就返回true。Prototype.js的对应名字为any。
          some: iterator("", 'if(_)return true', 'return false'),
          //只有数组中的元素都满足条件（放进给定函数返回true），它才返回true。Prototype.js的对应名字为all。
          every: iterator("", 'if(!_)return false', 'return true')
      })
  }
  /*********************************************************************
   *                           DOM 底层补丁                             *
   **********************************************************************/
  
  function fixContains(root, el) {
      try { //IE6-8,游离于DOM树外的文本节点，访问parentNode有时会抛错
          while ((el = el.parentNode))
              if (el === root)
                  return true
          return false
      } catch (e) {
          return false
      }
  }
  avalon.contains = fixContains
  //IE6-11的文档对象没有contains
  if (!DOC.contains) {
      DOC.contains = function (b) {
          return fixContains(DOC, b)
      }
  }
  
  function outerHTML() {
      return new XMLSerializer().serializeToString(this)
  }
  
  if (window.SVGElement) {
      //safari5+是把contains方法放在Element.prototype上而不是Node.prototype
      if (!DOC.createTextNode("x").contains) {
          Node.prototype.contains = function (arg) {//IE6-8没有Node对象
              return !!(this.compareDocumentPosition(arg) & 16)
          }
      }
      var svgns = "http://www.w3.org/2000/svg"
      var svg = DOC.createElementNS(svgns, "svg")
      svg.innerHTML = '<circle cx="50" cy="50" r="40" fill="red" />'
      if (!rsvg.test(svg.firstChild)) { // #409
          function enumerateNode(node, targetNode) {// jshint ignore:line
              if (node && node.childNodes) {
                  var nodes = node.childNodes
                  for (var i = 0, el; el = nodes[i++]; ) {
                      if (el.tagName) {
                          var svg = DOC.createElementNS(svgns,
                                  el.tagName.toLowerCase())
                          ap.forEach.call(el.attributes, function (attr) {
                              svg.setAttribute(attr.name, attr.value) //复制属性
                          })// jshint ignore:line
                          // 递归处理子节点
                          enumerateNode(el, svg)
                          targetNode.appendChild(svg)
                      }
                  }
              }
          }
          Object.defineProperties(SVGElement.prototype, {
              "outerHTML": {//IE9-11,firefox不支持SVG元素的innerHTML,outerHTML属性
                  enumerable: true,
                  configurable: true,
                  get: outerHTML,
                  set: function (html) {
                      var tagName = this.tagName.toLowerCase(),
                              par = this.parentNode,
                              frag = avalon.parseHTML(html)
                      // 操作的svg，直接插入
                      if (tagName === "svg") {
                          par.insertBefore(frag, this)
                          // svg节点的子节点类似
                      } else {
                          var newFrag = DOC.createDocumentFragment()
                          enumerateNode(frag, newFrag)
                          par.insertBefore(newFrag, this)
                      }
                      par.removeChild(this)
                  }
              },
              "innerHTML": {
                  enumerable: true,
                  configurable: true,
                  get: function () {
                      var s = this.outerHTML
                      var ropen = new RegExp("<" + this.nodeName + '\\b(?:(["\'])[^"]*?(\\1)|[^>])*>', "i")
                      var rclose = new RegExp("<\/" + this.nodeName + ">$", "i")
                      return s.replace(ropen, "").replace(rclose, "")
                  },
                  set: function (html) {
                      if (avalon.clearHTML) {
                          avalon.clearHTML(this)
                          var frag = avalon.parseHTML(html)
                          enumerateNode(frag, this)
                      }
                  }
              }
          })
      }
  }
  if (!root.outerHTML && window.HTMLElement) { //firefox 到11时才有outerHTML
      HTMLElement.prototype.__defineGetter__("outerHTML", outerHTML);
  }
  
  
  //============================= event binding =======================
  var rmouseEvent = /^(?:mouse|contextmenu|drag)|click/
  function fixEvent(event) {
      var ret = {}
      for (var i in event) {
          ret[i] = event[i]
      }
      var target = ret.target = event.srcElement
      if (event.type.indexOf("key") === 0) {
          ret.which = event.charCode != null ? event.charCode : event.keyCode
      } else if (rmouseEvent.test(event.type)) {
          var doc = target.ownerDocument || DOC
          var box = doc.compatMode === "BackCompat" ? doc.body : doc.documentElement
          ret.pageX = event.clientX + (box.scrollLeft >> 0) - (box.clientLeft >> 0)
          ret.pageY = event.clientY + (box.scrollTop >> 0) - (box.clientTop >> 0)
          ret.wheelDeltaY = ret.wheelDelta
          ret.wheelDeltaX = 0
      }
      ret.timeStamp = new Date() - 0
      ret.originalEvent = event
      ret.preventDefault = function () { //阻止默认行为
          event.returnValue = false
      }
      ret.stopPropagation = function () { //阻止事件在DOM树中的传播
          event.cancelBubble = true
      }
      return ret
  }
  
  var eventHooks = avalon.eventHooks
  //针对firefox, chrome修正mouseenter, mouseleave
  if (!("onmouseenter" in root)) {
      avalon.each({
          mouseenter: "mouseover",
          mouseleave: "mouseout"
      }, function (origType, fixType) {
          eventHooks[origType] = {
              type: fixType,
              fn: function (elem, fn) {
                  return function (e) {
                      var t = e.relatedTarget
                      if (!t || (t !== elem && !(elem.compareDocumentPosition(t) & 16))) {
                          delete e.type
                          e.type = origType
                          return fn.call(elem, e)
                      }
                  }
              }
          }
      })
  }
  //针对IE9+, w3c修正animationend
  avalon.each({
      AnimationEvent: "animationend",
      WebKitAnimationEvent: "webkitAnimationEnd"
  }, function (construct, fixType) {
      if (window[construct] && !eventHooks.animationend) {
          eventHooks.animationend = {
              type: fixType
          }
      }
  })
  //针对IE6-8修正input
  if (!("oninput" in DOC.createElement("input"))) {
      eventHooks.input = {
          type: "propertychange",
          fn: function (elem, fn) {
              return function (e) {
                  if (e.propertyName === "value") {
                      e.type = "input"
                      return fn.call(elem, e)
                  }
              }
          }
      }
  }
  if (DOC.onmousewheel === void 0) {
      /* IE6-11 chrome mousewheel wheelDetla 下 -120 上 120
       firefox DOMMouseScroll detail 下3 上-3
       firefox wheel detlaY 下3 上-3
       IE9-11 wheel deltaY 下40 上-40
       chrome wheel deltaY 下100 上-100 */
      var fixWheelType = DOC.onwheel !== void 0 ? "wheel" : "DOMMouseScroll"
      var fixWheelDelta = fixWheelType === "wheel" ? "deltaY" : "detail"
      eventHooks.mousewheel = {
          type: fixWheelType,
          fn: function (elem, fn) {
              return function (e) {
                  e.wheelDeltaY = e.wheelDelta = e[fixWheelDelta] > 0 ? -120 : 120
                  e.wheelDeltaX = 0
                  if (Object.defineProperty) {
                      Object.defineProperty(e, "type", {
                          value: "mousewheel"
                      })
                  }
                  fn.call(elem, e)
              }
          }
      }
  }
  
  
  
  /*********************************************************************
   *                           配置系统                                 *
   **********************************************************************/
  
  function kernel(settings) {
      for (var p in settings) {
          if (!ohasOwn.call(settings, p))
              continue
          var val = settings[p]
          if (typeof kernel.plugins[p] === "function") {
              kernel.plugins[p](val)
          } else if (typeof kernel[p] === "object") {
              avalon.mix(kernel[p], val)
          } else {
              kernel[p] = val
          }
      }
      return this
  }
  var openTag, closeTag, rexpr, rexprg, rbind, rregexp = /[-.*+?^${}()|[\]\/\\]/g
  
  function escapeRegExp(target) {
      //http://stevenlevithan.com/regex/xregexp/
      //将字符串安全格式化为正则表达式的源码
      return (target + "").replace(rregexp, "\\$&")
  }
  
  var plugins = {
  
      interpolate: function (array) {
          openTag = array[0]
          closeTag = array[1]
          if (openTag === closeTag) {
              throw new SyntaxError("openTag===closeTag")
          } else {
              var test = openTag + "test" + closeTag
              cinerator.innerHTML = test
              if (cinerator.innerHTML !== test && cinerator.innerHTML.indexOf("&lt;") > -1) {
                  throw new SyntaxError("此定界符不合法")
              }
              kernel.openTag = openTag
              kernel.closeTag = closeTag
              cinerator.innerHTML = ""
          }
          var o = escapeRegExp(openTag),
                  c = escapeRegExp(closeTag)
          rexpr = new RegExp(o + "([\\s\\S]*)" + c)
          rexprg = new RegExp(o + "([\\s\\S]*)" + c, "g")
          rbind = new RegExp(o + "[\\s\\S]*" + c + "|\\sms-")
      }
  }
  
  kernel.debug = true
  kernel.plugins = plugins
  kernel.plugins['interpolate'](["{{", "}}"])
  kernel.paths = {}
  kernel.shim = {}
  kernel.maxRepeatSize = 100
  avalon.config = kernel
  var ravalon = /(\w+)\[(avalonctrl)="(\S+)"\]/
  var findNodes = DOC.querySelectorAll ? function(str) {
      return DOC.querySelectorAll(str)
  } : function(str) {
      var match = str.match(ravalon)
      var all = DOC.getElementsByTagName(match[1])
      var nodes = []
      for (var i = 0, el; el = all[i++]; ) {
          if (el.getAttribute(match[2]) === match[3]) {
              nodes.push(el)
          }
      }
      return nodes
  }
  /*********************************************************************
   *                            事件总线                               *
   **********************************************************************/
  var EventBus = {
      $watch: function (type, callback) {
          if (typeof callback === "function") {
              var callbacks = this.$events[type]
              if (callbacks) {
                  callbacks.push(callback)
              } else {
                  this.$events[type] = [callback]
              }
          } else { //重新开始监听此VM的第一重简单属性的变动
              this.$events = this.$watch.backup
          }
          return this
      },
      $unwatch: function (type, callback) {
          var n = arguments.length
          if (n === 0) { //让此VM的所有$watch回调无效化
              this.$watch.backup = this.$events
              this.$events = {}
          } else if (n === 1) {
              this.$events[type] = []
          } else {
              var callbacks = this.$events[type] || []
              var i = callbacks.length
              while (~--i < 0) {
                  if (callbacks[i] === callback) {
                      return callbacks.splice(i, 1)
                  }
              }
          }
          return this
      },
      $fire: function (type) {
          var special, i, v, callback
          if (/^(\w+)!(\S+)$/.test(type)) {
              special = RegExp.$1
              type = RegExp.$2
          }
          var events = this.$events
          if (!events)
              return
          var args = aslice.call(arguments, 1)
          var detail = [type].concat(args)
          if (special === "all") {
              for (i in avalon.vmodels) {
                  v = avalon.vmodels[i]
                  if (v !== this) {
                      v.$fire.apply(v, detail)
                  }
              }
          } else if (special === "up" || special === "down") {
              var elements = events.expr ? findNodes(events.expr) : []
              if (elements.length === 0)
                  return
              for (i in avalon.vmodels) {
                  v = avalon.vmodels[i]
                  if (v !== this) {
                      if (v.$events.expr) {
                          var eventNodes = findNodes(v.$events.expr)
                          if (eventNodes.length === 0) {
                              continue
                          }
                          //循环两个vmodel中的节点，查找匹配（向上匹配或者向下匹配）的节点并设置标识
                          /* jshint ignore:start */
                          ap.forEach.call(eventNodes, function (node) {
                              ap.forEach.call(elements, function (element) {
                                  var ok = special === "down" ? element.contains(node) : //向下捕获
                                          node.contains(element) //向上冒泡
                                  if (ok) {
                                      node._avalon = v //符合条件的加一个标识
                                  }
                              });
                          })
                          /* jshint ignore:end */
                      }
                  }
              }
              var nodes = DOC.getElementsByTagName("*") //实现节点排序
              var alls = []
              ap.forEach.call(nodes, function (el) {
                  if (el._avalon) {
                      alls.push(el._avalon)
                      el._avalon = ""
                      el.removeAttribute("_avalon")
                  }
              })
              if (special === "up") {
                  alls.reverse()
              }
              for (i = 0; callback = alls[i++]; ) {
                  if (callback.$fire.apply(callback, detail) === false) {
                      break
                  }
              }
          } else {
              var callbacks = events[type] || []
              var all = events.$all || []
              for (i = 0; callback = callbacks[i++]; ) {
                  if (isFunction(callback))
                      callback.apply(this, args)
              }
              for (i = 0; callback = all[i++]; ) {
                  if (isFunction(callback))
                      callback.apply(this, arguments)
              }
          }
      }
  }
  /*********************************************************************
   *                           modelFactory                             *
   **********************************************************************/
  //avalon最核心的方法的两个方法之一（另一个是avalon.scan），返回一个ViewModel(VM)
  var VMODELS = avalon.vmodels = {} //所有vmodel都储存在这里
  avalon.define = function (id, factory) {
      var $id = id.$id || id
      if (!$id) {
          log("warning: vm必须指定$id")
      }
      if (VMODELS[$id]) {
          log("warning: " + $id + " 已经存在于avalon.vmodels中")
      }
      if (typeof id === "object") {
          var model = modelFactory(id)
      } else {
          var scope = {
              $watch: noop
          }
          factory(scope) //得到所有定义
  
          model = modelFactory(scope) //偷天换日，将scope换为model
          stopRepeatAssign = true
          factory(model)
          stopRepeatAssign = false
      }
      model.$id = $id
      return VMODELS[$id] = model
  }
  
  //一些不需要被监听的属性
  var $$skipArray = String("$id,$watch,$unwatch,$fire,$events,$model,$skipArray,$reinitialize").match(rword)
  var defineProperty = Object.defineProperty
  var canHideOwn = true
  //如果浏览器不支持ecma262v5的Object.defineProperties或者存在BUG，比如IE8
  //标准浏览器使用__defineGetter__, __defineSetter__实现
  try {
      defineProperty({}, "_", {
          value: "x"
      })
      var defineProperties = Object.defineProperties
  } catch (e) {
      canHideOwn = false
  }
  
  function modelFactory(source, $special, $model) {
      if (Array.isArray(source)) {
          var arr = source.concat()
          source.length = 0
          var collection = arrayFactory(source)
          collection.pushArray(arr)
          return collection
      }
      //0 null undefined || Node || VModel(fix IE6-8 createWithProxy $val: val引发的BUG)
      if (!source || (source.$id && source.$events) || (source.nodeType > 0 && source.nodeName) ) {
          return source
      }
      var $skipArray = Array.isArray(source.$skipArray) ? source.$skipArray : []
      $skipArray.$special = $special || {} //强制要监听的属性
      var $vmodel = {} //要返回的对象, 它在IE6-8下可能被偷龙转凤
      $model = $model || {} //vmodels.$model属性
      var $events = {} //vmodel.$events属性
      var accessors = {} //监控属性
      var computed = []
      $$skipArray.forEach(function (name) {
          delete source[name]
      })
      var names = Object.keys(source)
      /* jshint ignore:start */
      names.forEach(function (name, accessor) {
          var val = source[name]
          $model[name] = val
          if (isObservable(name, val, $skipArray)) {
              //总共产生三种accessor
              $events[name] = []
              var valueType = avalon.type(val)
              //总共产生三种accessor
              if (valueType === "object" && isFunction(val.get) && Object.keys(val).length <= 2) {
                  accessor = makeComputedAccessor(name, val)
                  computed.push(accessor)
              } else if (rcomplexType.test(valueType)) {
                  // issue #940 解决$model层次依赖丢失 https://github.com/RubyLouvre/avalon/issues/940
                  //  $model[name] = {}
                  accessor = makeComplexAccessor(name, val, valueType, $events[name], $model)
              } else {
                  accessor = makeSimpleAccessor(name, val)
              }
              accessors[name] = accessor
          }
      })
      /* jshint ignore:end */
      $vmodel = defineProperties($vmodel, descriptorFactory(accessors), source) //生成一个空的ViewModel
      for (var i = 0; i < names.length; i++) {
          var name = names[i]
          if (!accessors[name]) {
              $vmodel[name] = source[name]
          }
      }
      //添加$id, $model, $events, $watch, $unwatch, $fire
      hideProperty($vmodel, "$id", generateID())
      hideProperty($vmodel, "$model", $model)
      hideProperty($vmodel, "$events", $events)
      /* jshint ignore:start */
      if (canHideOwn) {
         hideProperty($vmodel, "hasOwnProperty", function (name) {
              return name in $vmodel.$model
          })
      } else {
          $vmodel.hasOwnProperty = function (name) {
              return (name in $vmodel.$model) && (name !== "hasOwnProperty")
          }
      }
      /* jshint ignore:end */
      for ( i in EventBus) {
          hideProperty($vmodel, i, EventBus[i].bind($vmodel))
      }
  
      $vmodel.$reinitialize = function () {
          computed.forEach(function (accessor) {
              delete accessor._value
              delete accessor.oldArgs
              accessor.digest = function () {
                  accessor.call($vmodel)
              }
              dependencyDetection.begin({
                  callback: function (vm, dependency) {//dependency为一个accessor
                      var name = dependency._name
                      if (dependency !== accessor) {
                          var list = vm.$events[name]
                          injectDependency(list, accessor.digest)
                      }
                  }
              })
              try {
                  accessor.get.call($vmodel)
              } finally {
                  dependencyDetection.end()
              }
          })
      }
      $vmodel.$reinitialize()
      return $vmodel
  }
  
  
  function hideProperty(host, name, value) {
      if (canHideOwn) {
          Object.defineProperty(host, name, {
              value: value,
              writable: true,
              enumerable: false,
              configurable: true
          })
      } else {
          host[name] = value
      }
  }
  //创建一个简单访问器
  function makeSimpleAccessor(name, value) {
      function accessor(value) {
          var oldValue = accessor._value
          if (arguments.length > 0) {
              if (!stopRepeatAssign && !isEqual(value, oldValue)) {
                  accessor.updateValue(this, value)
                  accessor.notify(this, value, oldValue)
              }
              return this
          } else {
              dependencyDetection.collectDependency(this, accessor)
              return oldValue
          }
      }
      accessorFactory(accessor, name)
      accessor._value = value
      return accessor;
  }
  
  //创建一个计算访问器
  function makeComputedAccessor(name, options) {
      function accessor(value) {//计算属性
          var oldValue = accessor._value
          var init = ("_value" in accessor)
          if (arguments.length > 0) {
              if (stopRepeatAssign) {
                  return this
              }
              if (typeof accessor.set === "function") {
                  if (accessor.oldArgs !== value) {
                      accessor.oldArgs = value
                      var $events = this.$events
                      var lock = $events[name]
                      $events[name] = [] //清空回调，防止内部冒泡而触发多次$fire
                      accessor.set.call(this, value)
                      $events[name] = lock
                      value = accessor.get.call(this)
                      if (value !== oldValue) {
                          accessor.updateValue(this, value)
                          accessor.notify(this, value, oldValue) //触发$watch回调
                      }
                  }
              }
              return this
          } else {
              //将依赖于自己的高层访问器或视图刷新函数（以绑定对象形式）放到自己的订阅数组中
              //将自己注入到低层访问器的订阅数组中
              value = accessor.get.call(this)
              accessor.updateValue(this, value)
              if (init && oldValue !== value) {
                  accessor.notify(this, value, oldValue) //触发$watch回调
              }
              return value
          }
      }
      accessor.set = options.set
      accessor.get = options.get
      accessorFactory(accessor, name)
      return accessor
  }
  
  //创建一个复杂访问器
  function makeComplexAccessor(name, initValue, valueType, list, parentModel) {
  
      function accessor(value) {
          var oldValue = accessor._value
  
          var son = accessor._vmodel
          if (arguments.length > 0) {
              if (stopRepeatAssign) {
                  return this
              }
              if (valueType === "array") {
                  var a = son, b = value,
                          an = a.length,
                          bn = b.length
                  a.$lock = true
                  if (an > bn) {
                      a.splice(bn, an - bn)
                  } else if (bn > an) {
                      a.push.apply(a, b.slice(an))
                  }
                  var n = Math.min(an, bn)
                  for (var i = 0; i < n; i++) {
                      a.set(i, b[i])
                  }
                  delete a.$lock
                  a._fire("set")
              } else if (valueType === "object") {
                  value = value.$model ? value.$model : value
                  var observes = this.$events[name] || []
                  var newObject = avalon.mix(true, {}, value)
                  for(i in son ){
                      if(son.hasOwnProperty(i) && ohasOwn.call(newObject,i)){
                          son[i] = newObject[i]
                      }
                  }
                  son = accessor._vmodel = modelFactory(value)
                  son.$events[subscribers] = observes
                  if (observes.length) {
                      observes.forEach(function (data) {
                          if (!data.type) {
                             return //数据未准备好时忽略更新
                          }
                          if (data.rollback) {
                              data.rollback() //还原 ms-with ms-on
                          }
                          bindingHandlers[data.type](data, data.vmodels)
                      })
                  }
              }
              accessor.updateValue(this, son.$model)
              accessor.notify(this, this._value, oldValue)
              return this
          } else {
              dependencyDetection.collectDependency(this, accessor)
              return son
          }
      }
      accessorFactory(accessor, name)
      if (Array.isArray(initValue)) {
          parentModel[name] = initValue
      } else {
          parentModel[name] = parentModel[name] || {}
      }
      var son = accessor._vmodel = modelFactory(initValue, 0, parentModel[name])
      son.$events[subscribers] = list
      return accessor
  }
  
  function globalUpdateValue(vmodel, value) {
      vmodel.$model[this._name] = this._value = value
  }
  
  function globalNotify(vmodel, value, oldValue) {
      var name = this._name
      var array = vmodel.$events[name] //刷新值
      if (array) {
          fireDependencies(array) //同步视图
          EventBus.$fire.call(vmodel, name, value, oldValue) //触发$watch回调
      }
  }
  
  function accessorFactory(accessor, name) {
      accessor._name = name
      //同时更新_value与model
      accessor.updateValue = globalUpdateValue
      accessor.notify = globalNotify
  }
  
  //比较两个值是否相等
  var isEqual = Object.is || function (v1, v2) {
      if (v1 === 0 && v2 === 0) {
          return 1 / v1 === 1 / v2
      } else if (v1 !== v1) {
          return v2 !== v2
      } else {
          return v1 === v2
      }
  }
  
  function isObservable(name, value, $skipArray) {
      if (isFunction(value) || value && value.nodeName && (value.nodeType > 0) ) {
          return false
      }
      if ($skipArray.indexOf(name) !== -1) {
          return false
      }
      var $special = $skipArray.$special
      if (name && name.charAt(0) === "$" && !$special[name]) {
          return false
      }
      return true
  }
  function keysVM(obj) {
      var arr = Object.keys(obj.$model ? obj.$model: obj)
      for (var i = 0; i < $$skipArray.length; i++) {
          var index = arr.indexOf($$skipArray[i])
          if (index !== -1) {
              arr.splice(index, 1)
          }
      }
      return arr
  }
  var descriptorFactory = W3C ? function (obj) {
      var descriptors = {}
      for (var i in obj) {
          descriptors[i] = {
              get: obj[i],
              set: obj[i],
              enumerable: true,
              configurable: true
          }
      }
      return descriptors
  } : function (a) {
      return a
  }
  
  //===================修复浏览器对Object.defineProperties的支持=================
  if (!canHideOwn) {
      if ("__defineGetter__" in avalon) {
          defineProperty = function (obj, prop, desc) {
              if ('value' in desc) {
                  obj[prop] = desc.value
              }
              if ("get" in desc) {
                  obj.__defineGetter__(prop, desc.get)
              }
              if ('set' in desc) {
                  obj.__defineSetter__(prop, desc.set)
              }
              return obj
          }
          defineProperties = function (obj, descs) {
              for (var prop in descs) {
                  if (descs.hasOwnProperty(prop)) {
                      defineProperty(obj, prop, descs[prop])
                  }
              }
              return obj
          }
      }
      if (IEVersion) {
          var VBClassPool = {}
          window.execScript([// jshint ignore:line
              "Function parseVB(code)",
              "\tExecuteGlobal(code)",
              "End Function" //转换一段文本为VB代码
          ].join("\n"), "VBScript")
          function VBMediator(instance, accessors, name, value) {// jshint ignore:line
              var accessor = accessors[name]
              if (arguments.length === 4) {
                  accessor.call(instance, value)
              } else {
                  return accessor.call(instance)
              }
          }
          defineProperties = function (name, accessors, properties) {
              // jshint ignore:line
              var buffer = []
              buffer.push(
                      "\r\n\tPrivate [__data__], [__proxy__]",
                      "\tPublic Default Function [__const__](d"+expose+", p"+expose+")",
                      "\t\tSet [__data__] = d"+expose+": set [__proxy__] = p"+expose,
                      "\t\tSet [__const__] = Me", //链式调用
                      "\tEnd Function")
              //添加普通属性,因为VBScript对象不能像JS那样随意增删属性，必须在这里预先定义好
              for (name in properties) {
                  if (!accessors.hasOwnProperty(name)) {
                      buffer.push("\tPublic [" + name + "]")
                  }
              }
              $$skipArray.forEach(function (name) {
                  if (!accessors.hasOwnProperty(name)) {
                      buffer.push("\tPublic [" + name + "]")
                  }
              })
              buffer.push("\tPublic [" + 'hasOwnProperty' + "]")
              //添加访问器属性 
              for (name in accessors) {
                  buffer.push(
                          //由于不知对方会传入什么,因此set, let都用上
                          "\tPublic Property Let [" + name + "](val" + expose + ")", //setter
                          "\t\tCall [__proxy__](Me,[__data__], \"" + name + "\", val" + expose + ")",
                          "\tEnd Property",
                          "\tPublic Property Set [" + name + "](val" + expose + ")", //setter
                          "\t\tCall [__proxy__](Me,[__data__], \"" + name + "\", val" + expose + ")",
                          "\tEnd Property",
                          "\tPublic Property Get [" + name + "]", //getter
                          "\tOn Error Resume Next", //必须优先使用set语句,否则它会误将数组当字符串返回
                          "\t\tSet[" + name + "] = [__proxy__](Me,[__data__],\"" + name + "\")",
                          "\tIf Err.Number <> 0 Then",
                          "\t\t[" + name + "] = [__proxy__](Me,[__data__],\"" + name + "\")",
                          "\tEnd If",
                          "\tOn Error Goto 0",
                          "\tEnd Property")
  
              }
  
              buffer.push("End Class")
              var body = buffer.join("\r\n")
              var className =VBClassPool[body]   
              if (!className) {
                  className = generateID("VBClass")
                  window.parseVB("Class " + className + body)
                  window.parseVB([
                      "Function " + className + "Factory(a, b)", //创建实例并传入两个关键的参数
                      "\tDim o",
                      "\tSet o = (New " + className + ")(a, b)",
                      "\tSet " + className + "Factory = o",
                      "End Function"
                  ].join("\r\n"))
                  VBClassPool[body] = className
              }
              var ret = window[className + "Factory"](accessors, VBMediator) //得到其产品
              return ret //得到其产品
          }
      }
  }
  
  /*********************************************************************
   *          监控数组（与ms-each, ms-repeat配合使用）                     *
   **********************************************************************/
  
  function arrayFactory(model) {
      var array = []
      array.$id = generateID()
      array.$model = model //数据模型
      array.$events = {}
      array.$events[subscribers] = []
      array._ = modelFactory({
          length: model.length
      })
      array._.$watch("length", function (a, b) {
          array.$fire("length", a, b)
      })
      for (var i in EventBus) {
          array[i] = EventBus[i]
      }
      avalon.mix(array, arrayPrototype)
      return array
  }
  
  function mutateArray(method, pos, n, index, method2, pos2, n2) {
      var oldLen = this.length, loop = 2
      while (--loop) {
          switch (method) {
        case "add":
                  /* jshint ignore:start */
                  var array = this.$model.slice(pos, pos + n).map(function (el) {
                      if (rcomplexType.test(avalon.type(el))) {
                          return el.$id ? el : modelFactory(el, 0, el)
                      } else {
                          return el
                      }
                  })
                  /* jshint ignore:end */
                  _splice.apply(this, [pos, 0].concat(array))
                  this._fire("add", pos, n)
                  break
              case "del":
                  var ret = this._splice(pos, n)
                  this._fire("del", pos, n)
                  break
          }
          if (method2) {
              method = method2
              pos = pos2
              n = n2
              loop = 2
              method2 = 0
          }
      }
      this._fire("index", index)
      if (this.length !== oldLen) {
          this._.length = this.length
      }
      return ret
  }
  
  var _splice = ap.splice
  var arrayPrototype = {
      _splice: _splice,
      _fire: function (method, a, b) {
          fireDependencies(this.$events[subscribers], method, a, b)
      },
      size: function () { //取得数组长度，这个函数可以同步视图，length不能
          return this._.length
      },
      pushArray: function (array) {
          var m = array.length, n = this.length
          if (m) {
              ap.push.apply(this.$model, array)
              mutateArray.call(this, "add", n, m, Math.max(0, n - 1))
          }
          return  m + n
      },
      push: function () {
          //http://jsperf.com/closure-with-arguments
          var array = []
          var i, n = arguments.length
          for (i = 0; i < n; i++) {
              array[i] = arguments[i]
          }
          return this.pushArray(array)
      },
      unshift: function () {
          var m = arguments.length, n = this.length
          if (m) {
              ap.unshift.apply(this.$model, arguments)
              mutateArray.call(this, "add", 0, m, 0)
          }
          return  m + n //IE67的unshift不会返回长度
      },
      shift: function () {
          if (this.length) {
              var el = this.$model.shift()
              mutateArray.call(this, "del", 0, 1, 0)
              return el //返回被移除的元素
          }
      },
      pop: function () {
          var n = this.length
          if (n) {
              var el = this.$model.pop()
              mutateArray.call(this, "del", n - 1, 1, Math.max(0, n - 2))
              return el //返回被移除的元素
          }
      },
      splice: function (start) {
          var m = arguments.length, args = [], change
          var removed = _splice.apply(this.$model, arguments)
          if (removed.length) { //如果用户删掉了元素
              args.push("del", start, removed.length, 0)
              change = true
          }
          if (m > 2) {  //如果用户添加了元素
              if (change) {
                  args.splice(3, 1, 0, "add", start, m - 2)
              } else {
                  args.push("add", start, m - 2, 0)
              }
              change = true
          }
          if (change) { //返回被移除的元素
              return mutateArray.apply(this, args)
          } else {
              return []
          }
      },
      contains: function (el) { //判定是否包含
          return this.indexOf(el) !== -1
      },
      remove: function (el) { //移除第一个等于给定值的元素
          return this.removeAt(this.indexOf(el))
      },
      removeAt: function (index) { //移除指定索引上的元素
          if (index >= 0) {
              this.$model.splice(index, 1)
              return mutateArray.call(this, "del", index, 1, 0)
          }
          return  []
      },
      clear: function () {
          this.$model.length = this.length = this._.length = 0 //清空数组
          this._fire("clear", 0)
          return this
      },
      removeAll: function (all) { //移除N个元素
          if (Array.isArray(all)) {
              for (var i = this.length - 1; i >= 0; i--) {
                  if (all.indexOf(this[i]) !== -1) {
                      this.removeAt(i)
                  }
              }
          } else if (typeof all === "function") {
              for ( i = this.length - 1; i >= 0; i--) {
                  var el = this[i]
                  if (all(el, i)) {
                      this.removeAt(i)
                  }
              }
          } else {
              this.clear()
          }
      },
      ensure: function (el) {
          if (!this.contains(el)) { //只有不存在才push
              this.push(el)
          }
          return this
      },
      set: function (index, val) {
          if (index < this.length && index > -1) {
              var valueType = avalon.type(val)
              if (val && val.$model) {
                  val = val.$model
              }
              var target = this[index]
              if (valueType === "object") {
                  for (var i in val) {
                      if (target.hasOwnProperty(i)) {
                          target[i] = val[i]
                      }
                  }
              } else if (valueType === "array") {
                  target.clear().push.apply(target, val)
              } else if (target !== val) {
                  this[index] = val
                  this.$model[index] = val
                  this._fire("set", index, val)
              }
          }
          return this
      }
  }
  //相当于原来bindingExecutors.repeat 的index分支
  function resetIndex(array, pos) {
      var last = array.length - 1
      for (var el; el = array[pos]; pos++) {
          el.$index = pos
          el.$first = pos === 0
          el.$last = pos === last
      }
  }
  
  function sortByIndex(array, indexes) {
      var map = {};
      for (var i = 0, n = indexes.length; i < n; i++) {
          map[i] = array[i] // preserve
          var j = indexes[i]
          if (j in map) {
              array[i] = map[j]
              delete map[j]
          } else {
              array[i] = array[j]
          }
      }
  }
  
  "sort,reverse".replace(rword, function (method) {
      arrayPrototype[method] = function () {
          var newArray = this.$model//这是要排序的新数组
          var oldArray = newArray.concat() //保持原来状态的旧数组
          var mask = Math.random()
          var indexes = []
          var hasSort
          ap[method].apply(newArray, arguments) //排序
          for (var i = 0, n = oldArray.length; i < n; i++) {
              var neo = newArray[i]
              var old = oldArray[i]
              if (isEqual(neo, old)) {
                  indexes.push(i)
              } else {
                  var index = oldArray.indexOf(neo)
                  indexes.push(index)//得到新数组的每个元素在旧数组对应的位置
                  oldArray[index] = mask    //屏蔽已经找过的元素
                  hasSort = true
              }
          }
          if (hasSort) {
              sortByIndex(this, indexes)
              // sortByIndex(this.$proxy, indexes)
              this._fire("move", indexes)
                this._fire("index", 0)
          }
          return this
      }
  })
  
  
  /*********************************************************************
   *                           依赖调度系统                             *
   **********************************************************************/
  //检测两个对象间的依赖关系
  var dependencyDetection = (function () {
      var outerFrames = []
      var currentFrame
      return {
          begin: function (accessorObject) {
              //accessorObject为一个拥有callback的对象
              outerFrames.push(currentFrame)
              currentFrame = accessorObject
          },
          end: function () {
              currentFrame = outerFrames.pop()
          },
          collectDependency: function (vmodel, accessor) {
              if (currentFrame) {
                  //被dependencyDetection.begin调用
                  currentFrame.callback(vmodel, accessor);
              }
          }
      };
  })()
  //将绑定对象注入到其依赖项的订阅数组中
  var ronduplex = /^(duplex|on)$/
  avalon.injectBinding = function (data) {
      var valueFn = data.evaluator
      if (valueFn) { //如果是求值函数
          dependencyDetection.begin({
              callback: function (vmodel, dependency) {
                  injectDependency(vmodel.$events[dependency._name], data)
              }
          })
          try {
              var value = ronduplex.test(data.type) ? data : valueFn.apply(0, data.args)
              if(value === void 0){
                  delete data.evaluator
              }
              if (data.handler) {
                  data.handler(value, data.element, data)
              }
          } catch (e) {
              log("warning:exception throwed in [avalon.injectBinding] " , e)
              delete data.evaluator
              var node = data.element
              if (node && node.nodeType === 3) {
                  var parent = node.parentNode
                  if (kernel.commentInterpolate) {
                      parent.replaceChild(DOC.createComment(data.value), node)
                  } else {
                      node.data = openTag + (data.oneTime ? "::" : "") + data.value + closeTag
                  }
              }
          } finally {
              dependencyDetection.end()
          }
      }
  }
  
  //将依赖项(比它高层的访问器或构建视图刷新函数的绑定对象)注入到订阅者数组 
  function injectDependency(list, data) {
      if (data.oneTime)
          return
      if (list && avalon.Array.ensure(list, data) && data.element) {
          injectDisposeQueue(data, list)
          if (new Date() - beginTime > 444 ) {
              rejectDisposeQueue()
          }
      }
  }
  
  //通知依赖于这个访问器的订阅者更新自身
  function fireDependencies(list) {
      if (list && list.length) {
          if (new Date() - beginTime > 444 && typeof list[0] === "object") {
              rejectDisposeQueue()
          }
          var args = aslice.call(arguments, 1)
          for (var i = list.length, fn; fn = list[--i]; ) {
              var el = fn.element
              if (el && el.parentNode) {
                  try {
                      var valueFn = fn.evaluator
                      if (fn.$repeat) {
                          fn.handler.apply(fn, args) //处理监控数组的方法
                      }else if("$repeat" in fn || !valueFn ){//如果没有eval,先eval
                          bindingHandlers[fn.type](fn, fn.vmodels)
                      } else if (fn.type !== "on") { //事件绑定只能由用户触发,不能由程序触发
                         var value = valueFn.apply(0, fn.args || [])
                         fn.handler(value, el, fn)
                      }
                  } catch (e) { 
                      avalon.log(e)
                  }
              }
          }
      }
  }
  /*********************************************************************
   *                          定时GC回收机制                             *
   **********************************************************************/
  var disposeCount = 0
  var disposeQueue = avalon.$$subscribers = []
  var beginTime = new Date()
  var oldInfo = {}
  
  function getUid(elem, makeID) { //IE9+,标准浏览器
      if (!elem.uuid && !makeID) {
          elem.uuid = ++disposeCount
      }
      return elem.uuid
  }
  
  //添加到回收列队中
  function injectDisposeQueue(data, list) {
      var elem = data.element
      if (!data.uuid) {
          if (elem.nodeType !== 1) {
              data.uuid = data.type + getUid(elem.parentNode) + "-" + (++disposeCount)
          } else {
              data.uuid = data.name + "-" + getUid(elem)
          }
      }
      if (!disposeQueue[data.uuid]) {
          data.list = list
          data.i = ~~data.i
          disposeQueue[data.uuid] = "__"
          disposeQueue.push(data)
      }
  }
  
  var lastGCIndex = 0
  function rejectDisposeQueue(data) {
      var i = lastGCIndex || disposeQueue.length
      var threshold = 0
      while (data = disposeQueue[--i]) {
          if (data.i < 7) {
              if (data.element === null) {
                  disposeQueue.splice(i, 1)
                  if (data.list) {
                      avalon.Array.remove(data.list, data)
                      delete disposeQueue[data.uuid]
                  }
                  continue
              }
              if (data.element && shouldDispose(data.element)) { //如果它的虚拟DOM不在VTree上或其属性不在VM上
                  disposeQueue.splice(i, 1)
                  avalon.Array.remove(data.list, data)
                  disposeData(data)
                  //avalon会在每次全量更新时,比较上次执行时间,
                  //假若距离上次有半秒,就会发起一次GC,并且只检测当中的500个绑定
                  //而一个正常的页面不会超过2000个绑定(500即取其4分之一)
                  //用户频繁操作页面,那么2,3秒内就把所有绑定检测一遍,将无效的绑定移除
                  if (threshold++ > 500) {
                      lastGCIndex = i
                      break
                  }
                  continue
              }
              data.i++
              //基于检测频率，如果检测过7次，可以认为其是长久存在的节点，那么以后每7次才检测一次
              if (data.i === 7) {
                  data.i = 14
              }
          } else {
              data.i--
          }
      }
      beginTime = new Date()
  }
  
  function disposeData(data) {
      delete disposeQueue[data.uuid] // 先清除，不然无法回收了
      data.element = null
      data.rollback && data.rollback()
      for (var key in data) {
          data[key] = null
      }
  }
  
  function shouldDispose(el) {
      try {//IE下，如果文本节点脱离DOM树，访问parentNode会报错
          var fireError = el.parentNode.nodeType
      } catch (e) {
          return true
      }
      if (el.ifRemove) {
          // 如果节点被放到ifGroup，才移除
          if (!root.contains(el.ifRemove) && (ifGroup === el.parentNode)) {
              el.parentNode && el.parentNode.removeChild(el)
              return true
          }
      }
      return el.msRetain ? 0 : (el.nodeType === 1 ? !root.contains(el) : !avalon.contains(root, el))
  }
  
  /************************************************************************
   *            HTML处理(parseHTML, innerHTML, clearHTML)                  *
   ************************************************************************/
  // We have to close these tags to support XHTML 
  var tagHooks = {
      area: [1, "<map>", "</map>"],
      param: [1, "<object>", "</object>"],
      col: [2, "<table><colgroup>", "</colgroup></table>"],
      legend: [1, "<fieldset>", "</fieldset>"],
      option: [1, "<select multiple='multiple'>", "</select>"],
      thead: [1, "<table>", "</table>"],
      tr: [2, "<table>", "</table>"],
      td: [3, "<table><tr>", "</tr></table>"],
      g: [1, '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1">', '</svg>'],
      //IE6-8在用innerHTML生成节点时，不能直接创建no-scope元素与HTML5的新标签
      _default: W3C ? [0, "", ""] : [1, "X<div>", "</div>"] //div可以不用闭合
  }
  tagHooks.th = tagHooks.td
  tagHooks.optgroup = tagHooks.option
  tagHooks.tbody = tagHooks.tfoot = tagHooks.colgroup = tagHooks.caption = tagHooks.thead
  String("circle,defs,ellipse,image,line,path,polygon,polyline,rect,symbol,text,use").replace(rword, function (tag) {
      tagHooks[tag] = tagHooks.g //处理SVG
  })
  var rtagName = /<([\w:]+)/  //取得其tagName
  var rxhtml = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/ig
  var rcreate = W3C ? /[^\d\D]/ : /(<(?:script|link|style|meta|noscript))/ig
  var scriptTypes = oneObject(["", "text/javascript", "text/ecmascript", "application/ecmascript", "application/javascript"])
  var rnest = /<(?:tb|td|tf|th|tr|col|opt|leg|cap|area)/ //需要处理套嵌关系的标签
  var script = DOC.createElement("script")
  var rhtml = /<|&#?\w+;/
  avalon.parseHTML = function (html) {
      var fragment = avalonFragment.cloneNode(false)
      if (typeof html !== "string") {
          return fragment
      }
      if (!rhtml.test(html)) {
          fragment.appendChild(DOC.createTextNode(html))
          return fragment
      }
      html = html.replace(rxhtml, "<$1></$2>").trim()
      var tag = (rtagName.exec(html) || ["", ""])[1].toLowerCase(),
              //取得其标签名
              wrap = tagHooks[tag] || tagHooks._default,
              wrapper = cinerator,
              firstChild, neo
      if (!W3C) { //fix IE
          html = html.replace(rcreate, "<br class=msNoScope>$1") //在link style script等标签之前添加一个补丁
      }
      wrapper.innerHTML = wrap[1] + html + wrap[2]
      var els = wrapper.getElementsByTagName("script")
      if (els.length) { //使用innerHTML生成的script节点不会发出请求与执行text属性
          for (var i = 0, el; el = els[i++]; ) {
              if (scriptTypes[el.type]) {
                  //以偷龙转凤方式恢复执行脚本功能
                  neo = script.cloneNode(false) //FF不能省略参数
                  ap.forEach.call(el.attributes, function (attr) {
                      if (attr && attr.specified) {
                          neo[attr.name] = attr.value //复制其属性
                          neo.setAttribute(attr.name, attr.value)
                      }
                  })  // jshint ignore:line
                  neo.text = el.text
                  el.parentNode.replaceChild(neo, el) //替换节点
              }
          }
      }
      if (!W3C) { //fix IE
          var target = wrap[1] === "X<div>" ? wrapper.lastChild.firstChild : wrapper.lastChild
          if (target && target.tagName === "TABLE" && tag !== "tbody") {
              //IE6-7处理 <thead> --> <thead>,<tbody>
              //<tfoot> --> <tfoot>,<tbody>
              //<table> --> <table><tbody></table>
              for (els = target.childNodes, i = 0; el = els[i++]; ) {
                  if (el.tagName === "TBODY" && !el.innerHTML) {
                      target.removeChild(el)
                      break
                  }
              }
          }
          els = wrapper.getElementsByTagName("br")
          var n = els.length
          while (el = els[--n]) {
              if (el.className === "msNoScope") {
                  el.parentNode.removeChild(el)
              }
          }
          for (els = wrapper.all, i = 0; el = els[i++]; ) { //fix VML
              if (isVML(el)) {
                  fixVML(el)
              }
          }
      }
      //移除我们为了符合套嵌关系而添加的标签
      for (i = wrap[0]; i--; wrapper = wrapper.lastChild) {
      }
      while (firstChild = wrapper.firstChild) { // 将wrapper上的节点转移到文档碎片上！
          fragment.appendChild(firstChild)
      }
      return fragment
  }
  
  function isVML(src) {
      var nodeName = src.nodeName
      return nodeName.toLowerCase() === nodeName && src.scopeName && src.outerText === ""
  }
  
  function fixVML(node) {
      if (node.currentStyle.behavior !== "url(#default#VML)") {
          node.style.behavior = "url(#default#VML)"
          node.style.display = "inline-block"
          node.style.zoom = 1 //hasLayout
      }
  }
  avalon.innerHTML = function (node, html) {
      if (!W3C && (!rcreate.test(html) && !rnest.test(html))) {
          try {
              node.innerHTML = html
              return
          } catch (e) {
          }
      }
      var a = this.parseHTML(html)
      this.clearHTML(node).appendChild(a)
  }
  avalon.clearHTML = function (node) {
      node.textContent = ""
      while (node.firstChild) {
          node.removeChild(node.firstChild)
      }
      return node
  }
  
  /*********************************************************************
   *                  avalon的原型方法定义区                            *
   **********************************************************************/
  
  function hyphen(target) {
      //转换为连字符线风格
      return target.replace(/([a-z\d])([A-Z]+)/g, "$1-$2").toLowerCase()
  }
  
  function camelize(target) {
      //提前判断，提高getStyle等的效率
      if (!target || target.indexOf("-") < 0 && target.indexOf("_") < 0) {
          return target
      }
      //转换为驼峰风格
      return target.replace(/[-_][^-_]/g, function (match) {
          return match.charAt(1).toUpperCase()
      })
  }
  
  var fakeClassListMethods = {
      _toString: function () {
          var node = this.node
          var cls = node.className
          var str = typeof cls === "string" ? cls : cls.baseVal
          return str.split(/\s+/).join(" ")
      },
      _contains: function (cls) {
          return (" " + this + " ").indexOf(" " + cls + " ") > -1
      },
      _add: function (cls) {
          if (!this.contains(cls)) {
              this._set(this + " " + cls)
          }
      },
      _remove: function (cls) {
          this._set((" " + this + " ").replace(" " + cls + " ", " "))
      },
      __set: function (cls) {
          cls = cls.trim()
          var node = this.node
          if (rsvg.test(node)) {
              //SVG元素的className是一个对象 SVGAnimatedString { baseVal="", animVal=""}，只能通过set/getAttribute操作
              node.setAttribute("class", cls)
          } else {
              node.className = cls
          }
      } //toggle存在版本差异，因此不使用它
  }
  
  function fakeClassList(node) {
      if (!("classList" in node)) {
          node.classList = {
              node: node
          }
          for (var k in fakeClassListMethods) {
              node.classList[k.slice(1)] = fakeClassListMethods[k]
          }
      }
      return node.classList
  }
  
  
  "add,remove".replace(rword, function (method) {
      avalon.fn[method + "Class"] = function (cls) {
          var el = this[0]
          //https://developer.mozilla.org/zh-CN/docs/Mozilla/Firefox/Releases/26
          if (cls && typeof cls === "string" && el && el.nodeType === 1) {
              cls.replace(/\S+/g, function (c) {
                  fakeClassList(el)[method](c)
              })
          }
          return this
      }
  })
  avalon.fn.mix({
      hasClass: function (cls) {
          var el = this[0] || {}
          return el.nodeType === 1 && fakeClassList(el).contains(cls)
      },
      toggleClass: function (value, stateVal) {
          var className, i = 0
          var classNames = String(value).split(/\s+/)
          var isBool = typeof stateVal === "boolean"
          while ((className = classNames[i++])) {
              var state = isBool ? stateVal : !this.hasClass(className)
              this[state ? "addClass" : "removeClass"](className)
          }
          return this
      },
      attr: function (name, value) {
          if (arguments.length === 2) {
              this[0].setAttribute(name, value)
              return this
          } else {
              return this[0].getAttribute(name)
          }
      },
      data: function (name, value) {
          name = "data-" + hyphen(name || "")
          switch (arguments.length) {
              case 2:
                  this.attr(name, value)
                  return this
              case 1:
                  var val = this.attr(name)
                  return parseData(val)
              case 0:
                  var ret = {}
                  ap.forEach.call(this[0].attributes, function (attr) {
                      if (attr) {
                          name = attr.name
                          if (!name.indexOf("data-")) {
                              name = camelize(name.slice(5))
                              ret[name] = parseData(attr.value)
                          }
                      }
                  })
                  return ret
          }
      },
      removeData: function (name) {
          name = "data-" + hyphen(name)
          this[0].removeAttribute(name)
          return this
      },
      css: function (name, value) {
          if (avalon.isPlainObject(name)) {
              for (var i in name) {
                  avalon.css(this, i, name[i])
              }
          } else {
              var ret = avalon.css(this, name, value)
          }
          return ret !== void 0 ? ret : this
      },
      position: function () {
          var offsetParent, offset,
                  elem = this[0],
                  parentOffset = {
                      top: 0,
                      left: 0
                  }
          if (!elem) {
              return
          }
          if (this.css("position") === "fixed") {
              offset = elem.getBoundingClientRect()
          } else {
              offsetParent = this.offsetParent() //得到真正的offsetParent
              offset = this.offset() // 得到正确的offsetParent
              if (offsetParent[0].tagName !== "HTML") {
                  parentOffset = offsetParent.offset()
              }
              parentOffset.top += avalon.css(offsetParent[0], "borderTopWidth", true)
              parentOffset.left += avalon.css(offsetParent[0], "borderLeftWidth", true)
  
              // Subtract offsetParent scroll positions
              parentOffset.top -= offsetParent.scrollTop()
              parentOffset.left -= offsetParent.scrollLeft()
          }
          return {
              top: offset.top - parentOffset.top - avalon.css(elem, "marginTop", true),
              left: offset.left - parentOffset.left - avalon.css(elem, "marginLeft", true)
          }
      },
      offsetParent: function () {
          var offsetParent = this[0].offsetParent
          while (offsetParent && avalon.css(offsetParent, "position") === "static") {
              offsetParent = offsetParent.offsetParent;
          }
          return avalon(offsetParent || root)
      },
      bind: function (type, fn, phase) {
          if (this[0]) { //此方法不会链
              return avalon.bind(this[0], type, fn, phase)
          }
      },
      unbind: function (type, fn, phase) {
          if (this[0]) {
              avalon.unbind(this[0], type, fn, phase)
          }
          return this
      },
      val: function (value) {
          var node = this[0]
          if (node && node.nodeType === 1) {
              var get = arguments.length === 0
              var access = get ? ":get" : ":set"
              var fn = valHooks[getValType(node) + access]
              if (fn) {
                  var val = fn(node, value)
              } else if (get) {
                  return (node.value || "").replace(/\r/g, "")
              } else {
                  node.value = value
              }
          }
          return get ? val : this
      }
  })
  
  function parseData(data) {
      try {
          if (typeof data === "object")
              return data
          data = data === "true" ? true :
                  data === "false" ? false :
                  data === "null" ? null : +data + "" === data ? +data : rbrace.test(data) ? avalon.parseJSON(data) : data
      } catch (e) {
      }
      return data
  }
  var rbrace = /(?:\{[\s\S]*\}|\[[\s\S]*\])$/,
          rvalidchars = /^[\],:{}\s]*$/,
          rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g,
          rvalidescape = /\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g,
          rvalidtokens = /"[^"\\\r\n]*"|true|false|null|-?(?:\d+\.|)\d+(?:[eE][+-]?\d+|)/g
  avalon.parseJSON = window.JSON ? JSON.parse : function (data) {
      if (typeof data === "string") {
          data = data.trim();
          if (data) {
              if (rvalidchars.test(data.replace(rvalidescape, "@")
                      .replace(rvalidtokens, "]")
                      .replace(rvalidbraces, ""))) {
                  return (new Function("return " + data))() // jshint ignore:line
              }
          }
          avalon.error("Invalid JSON: " + data)
      }
      return data
  }
  avalon.fireDom = function (elem, type, opts) {
      if (DOC.createEvent) {
          var hackEvent = DOC.createEvent("Events");
          hackEvent.initEvent(type, true, true)
          avalon.mix(hackEvent, opts)
          elem.dispatchEvent(hackEvent)
      } else {
          try {
              hackEvent = DOC.createEventObject()
              avalon.mix(hackEvent, opts)
              elem.fireEvent("on" + type, hackEvent)
          } catch (e) {//IE6-8触发事件必须保证在DOM树中,否则报"SCRIPT16389: 未指明的错误"
          }
      }
  }
  
  //生成avalon.fn.scrollLeft, avalon.fn.scrollTop方法
  avalon.each({
      scrollLeft: "pageXOffset",
      scrollTop: "pageYOffset"
  }, function (method, prop) {
      avalon.fn[method] = function (val) {
          var node = this[0] || {}, win = getWindow(node),
                  top = method === "scrollTop"
          if (!arguments.length) {
              return win ? (prop in win) ? win[prop] : root[method] : node[method]
          } else {
              if (win) {
                  win.scrollTo(!top ? val : avalon(win).scrollLeft(), top ? val : avalon(win).scrollTop())
              } else {
                  node[method] = val
              }
          }
      }
  })
  
  function getWindow(node) {
      return node.window && node.document ? node : node.nodeType === 9 ? node.defaultView || node.parentWindow : false;
  }
  //=============================css相关=======================
  var cssHooks = avalon.cssHooks = {}
  var prefixes = ["", "-webkit-", "-o-", "-moz-", "-ms-"]
  var cssMap = {
      "float": W3C ? "cssFloat" : "styleFloat"
  }
  avalon.cssNumber = oneObject("animationIterationCount,columnCount,order,flex,flexGrow,flexShrink,fillOpacity,fontWeight,lineHeight,opacity,orphans,widows,zIndex,zoom")
  
  avalon.cssName = function (name, host, camelCase) {
      if (cssMap[name]) {
          return cssMap[name]
      }
      host = host || root.style
      for (var i = 0, n = prefixes.length; i < n; i++) {
          camelCase = camelize(prefixes[i] + name)
          if (camelCase in host) {
              return (cssMap[name] = camelCase)
          }
      }
      return null
  }
  cssHooks["@:set"] = function (node, name, value) {
      try { //node.style.width = NaN;node.style.width = "xxxxxxx";node.style.width = undefine 在旧式IE下会抛异常
          node.style[name] = value
      } catch (e) {
      }
  }
  if (window.getComputedStyle) {
      cssHooks["@:get"] = function (node, name) {
          if (!node || !node.style) {
              throw new Error("getComputedStyle要求传入一个节点 " + node)
          }
          var ret, styles = getComputedStyle(node, null)
          if (styles) {
              ret = name === "filter" ? styles.getPropertyValue(name) : styles[name]
              if (ret === "") {
                  ret = node.style[name] //其他浏览器需要我们手动取内联样式
              }
          }
          return ret
      }
      cssHooks["opacity:get"] = function (node) {
          var ret = cssHooks["@:get"](node, "opacity")
          return ret === "" ? "1" : ret
      }
  } else {
      var rnumnonpx = /^-?(?:\d*\.)?\d+(?!px)[^\d\s]+$/i
      var rposition = /^(top|right|bottom|left)$/
      var ralpha = /alpha\([^)]*\)/i
      var ie8 = !!window.XDomainRequest
      var salpha = "DXImageTransform.Microsoft.Alpha"
      var border = {
          thin: ie8 ? '1px' : '2px',
          medium: ie8 ? '3px' : '4px',
          thick: ie8 ? '5px' : '6px'
      }
      cssHooks["@:get"] = function (node, name) {
          //取得精确值，不过它有可能是带em,pc,mm,pt,%等单位
          var currentStyle = node.currentStyle
          var ret = currentStyle[name]
          if ((rnumnonpx.test(ret) && !rposition.test(ret))) {
              //①，保存原有的style.left, runtimeStyle.left,
              var style = node.style,
                      left = style.left,
                      rsLeft = node.runtimeStyle.left
              //②由于③处的style.left = xxx会影响到currentStyle.left，
              //因此把它currentStyle.left放到runtimeStyle.left，
              //runtimeStyle.left拥有最高优先级，不会style.left影响
              node.runtimeStyle.left = currentStyle.left
              //③将精确值赋给到style.left，然后通过IE的另一个私有属性 style.pixelLeft
              //得到单位为px的结果；fontSize的分支见http://bugs.jquery.com/ticket/760
              style.left = name === 'fontSize' ? '1em' : (ret || 0)
              ret = style.pixelLeft + "px"
              //④还原 style.left，runtimeStyle.left
              style.left = left
              node.runtimeStyle.left = rsLeft
          }
          if (ret === "medium") {
              name = name.replace("Width", "Style")
              //border width 默认值为medium，即使其为0"
              if (currentStyle[name] === "none") {
                  ret = "0px"
              }
          }
          return ret === "" ? "auto" : border[ret] || ret
      }
      cssHooks["opacity:set"] = function (node, name, value) {
          var style = node.style
          var opacity = isFinite(value) && value <= 1 ? "alpha(opacity=" + value * 100 + ")" : ""
          var filter = style.filter || "";
          style.zoom = 1
          //不能使用以下方式设置透明度
          //node.filters.alpha.opacity = value * 100
          style.filter = (ralpha.test(filter) ?
                  filter.replace(ralpha, opacity) :
                  filter + " " + opacity).trim()
          if (!style.filter) {
              style.removeAttribute("filter")
          }
      }
      cssHooks["opacity:get"] = function (node) {
          //这是最快的获取IE透明值的方式，不需要动用正则了！
          var alpha = node.filters.alpha || node.filters[salpha],
                  op = alpha && alpha.enabled ? alpha.opacity : 100
          return (op / 100) + "" //确保返回的是字符串
      }
  }
  
  "top,left".replace(rword, function (name) {
      cssHooks[name + ":get"] = function (node) {
          var computed = cssHooks["@:get"](node, name)
          return /px$/.test(computed) ? computed :
                  avalon(node).position()[name] + "px"
      }
  })
  
  var cssShow = {
      position: "absolute",
      visibility: "hidden",
      display: "block"
  }
  
  var rdisplayswap = /^(none|table(?!-c[ea]).+)/
  
  function showHidden(node, array) {
      //http://www.cnblogs.com/rubylouvre/archive/2012/10/27/2742529.html
      if (node.offsetWidth <= 0) { //opera.offsetWidth可能小于0
          if (rdisplayswap.test(cssHooks["@:get"](node, "display"))) {
              var obj = {
                  node: node
              }
              for (var name in cssShow) {
                  obj[name] = node.style[name]
                  node.style[name] = cssShow[name]
              }
              array.push(obj)
          }
          var parent = node.parentNode
          if (parent && parent.nodeType === 1) {
              showHidden(parent, array)
          }
      }
  }
  "Width,Height".replace(rword, function (name) { //fix 481
      var method = name.toLowerCase(),
              clientProp = "client" + name,
              scrollProp = "scroll" + name,
              offsetProp = "offset" + name
      cssHooks[method + ":get"] = function (node, which, override) {
          var boxSizing = -4
          if (typeof override === "number") {
              boxSizing = override
          }
          which = name === "Width" ? ["Left", "Right"] : ["Top", "Bottom"]
          var ret = node[offsetProp] // border-box 0
          if (boxSizing === 2) { // margin-box 2
              return ret + avalon.css(node, "margin" + which[0], true) + avalon.css(node, "margin" + which[1], true)
          }
          if (boxSizing < 0) { // padding-box  -2
              ret = ret - avalon.css(node, "border" + which[0] + "Width", true) - avalon.css(node, "border" + which[1] + "Width", true)
          }
          if (boxSizing === -4) { // content-box -4
              ret = ret - avalon.css(node, "padding" + which[0], true) - avalon.css(node, "padding" + which[1], true)
          }
          return ret
      }
      cssHooks[method + "&get"] = function (node) {
          var hidden = [];
          showHidden(node, hidden);
          var val = cssHooks[method + ":get"](node)
          for (var i = 0, obj; obj = hidden[i++]; ) {
              node = obj.node
              for (var n in obj) {
                  if (typeof obj[n] === "string") {
                      node.style[n] = obj[n]
                  }
              }
          }
          return val;
      }
      avalon.fn[method] = function (value) { //会忽视其display
          var node = this[0]
          if (arguments.length === 0) {
              if (node.setTimeout) { //取得窗口尺寸,IE9后可以用node.innerWidth /innerHeight代替
                  return node["inner" + name] || node.document.documentElement[clientProp] ||
                          node.document.body[clientProp]//IE6下前两个分别为undefine,0
              }
              if (node.nodeType === 9) { //取得页面尺寸
                  var doc = node.documentElement
                  //FF chrome    html.scrollHeight< body.scrollHeight
                  //IE 标准模式 : html.scrollHeight> body.scrollHeight
                  //IE 怪异模式 : html.scrollHeight 最大等于可视窗口多一点？
                  return Math.max(node.body[scrollProp], doc[scrollProp], node.body[offsetProp], doc[offsetProp], doc[clientProp])
              }
              return cssHooks[method + "&get"](node)
          } else {
              return this.css(method, value)
          }
      }
      avalon.fn["inner" + name] = function () {
          return cssHooks[method + ":get"](this[0], void 0, -2)
      }
      avalon.fn["outer" + name] = function (includeMargin) {
          return cssHooks[method + ":get"](this[0], void 0, includeMargin === true ? 2 : 0)
      }
  })
  avalon.fn.offset = function () { //取得距离页面左右角的坐标
      var node = this[0],
              box = {
                  left: 0,
                  top: 0
              }
      if (!node || !node.tagName || !node.ownerDocument) {
          return box
      }
      var doc = node.ownerDocument,
              body = doc.body,
              root = doc.documentElement,
              win = doc.defaultView || doc.parentWindow
      if (!avalon.contains(root, node)) {
          return box
      }
      //http://hkom.blog1.fc2.com/?mode=m&no=750 body的偏移量是不包含margin的
      //我们可以通过getBoundingClientRect来获得元素相对于client的rect.
      //http://msdn.microsoft.com/en-us/library/ms536433.aspx
      if (node.getBoundingClientRect) {
          box = node.getBoundingClientRect() // BlackBerry 5, iOS 3 (original iPhone)
      }
      //chrome/IE6: body.scrollTop, firefox/other: root.scrollTop
      var clientTop = root.clientTop || body.clientTop,
              clientLeft = root.clientLeft || body.clientLeft,
              scrollTop = Math.max(win.pageYOffset || 0, root.scrollTop, body.scrollTop),
              scrollLeft = Math.max(win.pageXOffset || 0, root.scrollLeft, body.scrollLeft)
      // 把滚动距离加到left,top中去。
      // IE一些版本中会自动为HTML元素加上2px的border，我们需要去掉它
      // http://msdn.microsoft.com/en-us/library/ms533564(VS.85).aspx
      return {
          top: box.top + scrollTop - clientTop,
          left: box.left + scrollLeft - clientLeft
      }
  }
  
  //==================================val相关============================
  
  function getValType(elem) {
      var ret = elem.tagName.toLowerCase()
      return ret === "input" && /checkbox|radio/.test(elem.type) ? "checked" : ret
  }
  var roption = /^<option(?:\s+\w+(?:\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+))?)*\s+value[\s=]/i
  var valHooks = {
      "option:get": IEVersion ? function (node) {
          //在IE11及W3C，如果没有指定value，那么node.value默认为node.text（存在trim作），但IE9-10则是取innerHTML(没trim操作)
          //specified并不可靠，因此通过分析outerHTML判定用户有没有显示定义value
          return roption.test(node.outerHTML) ? node.value : node.text.trim()
      } : function (node) {
          return node.value
      },
      "select:get": function (node, value) {
          var option, options = node.options,
                  index = node.selectedIndex,
                  getter = valHooks["option:get"],
                  one = node.type === "select-one" || index < 0,
                  values = one ? null : [],
                  max = one ? index + 1 : options.length,
                  i = index < 0 ? max : one ? index : 0
          for (; i < max; i++) {
              option = options[i]
              //旧式IE在reset后不会改变selected，需要改用i === index判定
              //我们过滤所有disabled的option元素，但在safari5下，如果设置select为disable，那么其所有孩子都disable
              //因此当一个元素为disable，需要检测其是否显式设置了disable及其父节点的disable情况
              if ((option.selected || i === index) && !option.disabled) {
                  value = getter(option)
                  if (one) {
                      return value
                  }
                  //收集所有selected值组成数组返回
                  values.push(value)
              }
          }
          return values
      },
      "select:set": function (node, values, optionSet) {
          values = [].concat(values) //强制转换为数组
          var getter = valHooks["option:get"]
          for (var i = 0, el; el = node.options[i++]; ) {
              if ((el.selected = values.indexOf(getter(el)) > -1)) {
                  optionSet = true
              }
          }
          if (!optionSet) {
              node.selectedIndex = -1
          }
      }
  }
  
  /*********************************************************************
   *                          编译系统                                  *
   **********************************************************************/
  var meta = {
      '\b': '\\b',
      '\t': '\\t',
      '\n': '\\n',
      '\f': '\\f',
      '\r': '\\r',
      '"': '\\"',
      '\\': '\\\\'
  }
  var quote = window.JSON && JSON.stringify || function(str) {
      return '"' + str.replace(/[\\\"\x00-\x1f]/g, function(a) {
          var c = meta[a];
          return typeof c === 'string' ? c :
                  '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
      }) + '"'
  }
  
  var keywords = [
      "break,case,catch,continue,debugger,default,delete,do,else,false",
      "finally,for,function,if,in,instanceof,new,null,return,switch,this",
      "throw,true,try,typeof,var,void,while,with", /* 关键字*/
      "abstract,boolean,byte,char,class,const,double,enum,export,extends",
      "final,float,goto,implements,import,int,interface,long,native",
      "package,private,protected,public,short,static,super,synchronized",
      "throws,transient,volatile", /*保留字*/
      "arguments,let,yield,undefined" /* ECMA 5 - use strict*/].join(",")
  var rrexpstr = /\/\*[\w\W]*?\*\/|\/\/[^\n]*\n|\/\/[^\n]*$|"(?:[^"\\]|\\[\w\W])*"|'(?:[^'\\]|\\[\w\W])*'|[\s\t\n]*\.[\s\t\n]*[$\w\.]+/g
  var rsplit = /[^\w$]+/g
  var rkeywords = new RegExp(["\\b" + keywords.replace(/,/g, '\\b|\\b') + "\\b"].join('|'), 'g')
  var rnumber = /\b\d[^,]*/g
  var rcomma = /^,+|,+$/g
  var variablePool = new Cache(512)
  var getVariables = function (code) {
      var key = "," + code.trim()
      var ret = variablePool.get(key)
      if (ret) {
          return ret
      }
      var match = code
              .replace(rrexpstr, "")
              .replace(rsplit, ",")
              .replace(rkeywords, "")
              .replace(rnumber, "")
              .replace(rcomma, "")
              .split(/^$|,+/)
      return variablePool.put(key, uniqSet(match))
  }
  /*添加赋值语句*/
  
  function addAssign(vars, scope, name, data) {
      var ret = [],
              prefix = " = " + name + "."
      for (var i = vars.length, prop; prop = vars[--i]; ) {
          if (scope.hasOwnProperty(prop)) {
              ret.push(prop + prefix + prop)
              data.vars.push(prop)
              if (data.type === "duplex") {
                  vars.get = name + "." + prop
              }
              vars.splice(i, 1)
          }
      }
      return ret
  }
  
  function uniqSet(array) {
      var ret = [],
              unique = {}
      for (var i = 0; i < array.length; i++) {
          var el = array[i]
          var id = el && typeof el.$id === "string" ? el.$id : el
          if (!unique[id]) {
              unique[id] = ret.push(el)
          }
      }
      return ret
  }
  //缓存求值函数，以便多次利用
  var evaluatorPool = new Cache(128)
  //取得求值函数及其传参
  var rduplex = /\w\[.*\]|\w\.\w/
  var rproxy = /(\$proxy\$[a-z]+)\d+$/
  var rthimRightParentheses = /\)\s*$/
  var rthimOtherParentheses = /\)\s*\|/g
  var rquoteFilterName = /\|\s*([$\w]+)/g
  var rpatchBracket = /"\s*\["/g
  var rthimLeftParentheses = /"\s*\(/g
  function parseFilter(val, filters) {
      filters = filters
              .replace(rthimRightParentheses, "")//处理最后的小括号
              .replace(rthimOtherParentheses, function () {//处理其他小括号
                  return "],|"
              })
              .replace(rquoteFilterName, function (a, b) { //处理|及它后面的过滤器的名字
                  return "[" + quote(b)
              })
              .replace(rpatchBracket, function () {
                  return '"],["'
              })
              .replace(rthimLeftParentheses, function () {
                  return '",'
              }) + "]"
      return  "return this.filters.$filter(" + val + ", " + filters + ")"
  }
  
  function parseExpr(code, scopes, data) {
      var dataType = data.type
      var filters = data.filters || ""
      var exprId = scopes.map(function (el) {
          return String(el.$id).replace(rproxy, "$1")
      }) + code + dataType + filters
      var vars = getVariables(code).concat(),
              assigns = [],
              names = [],
              args = [],
              prefix = ""
      //args 是一个对象数组， names 是将要生成的求值函数的参数
      scopes = uniqSet(scopes)
      data.vars = []
      for (var i = 0, sn = scopes.length; i < sn; i++) {
          if (vars.length) {
              var name = "vm" + expose + "_" + i
              names.push(name)
              args.push(scopes[i])
              assigns.push.apply(assigns, addAssign(vars, scopes[i], name, data))
          }
      }
      if (!assigns.length && dataType === "duplex") {
          return
      }
      if (dataType !== "duplex" && (code.indexOf("||") > -1 || code.indexOf("&&") > -1)) {
          //https://github.com/RubyLouvre/avalon/issues/583
          data.vars.forEach(function (v) {
              var reg = new RegExp("\\b" + v + "(?:\\.\\w+|\\[\\w+\\])+", "ig")
              code = code.replace(reg, function (_, cap) {
                  var c = _.charAt(v.length)
                  //var r = IEVersion ? code.slice(arguments[1] + _.length) : RegExp.rightContext
                  //https://github.com/RubyLouvre/avalon/issues/966
                  var r = code.slice(cap + _.length)
                  var method = /^\s*\(/.test(r)
                  if (c === "." || c === "[" || method) {//比如v为aa,我们只匹配aa.bb,aa[cc],不匹配aaa.xxx
                      var name = "var" + String(Math.random()).replace(/^0\./, "")
                      if (method) {//array.size()
                          var array = _.split(".")
                          if (array.length > 2) {
                              var last = array.pop()
                              assigns.push(name + " = " + array.join("."))
                              return name + "." + last
                          } else {
                              return _
                          }
                      }
                      assigns.push(name + " = " + _)
                      return name
                  } else {
                      return _
                  }
              })
          })
      }
      //---------------args----------------
      data.args = args
      //---------------cache----------------
      delete data.vars
      var fn = evaluatorPool.get(exprId) //直接从缓存，免得重复生成
      if (fn) {
          data.evaluator = fn
          return
      }
      prefix = assigns.join(", ")
      if (prefix) {
          prefix = "var " + prefix
      }
      if (/\S/.test(filters)) { //文本绑定，双工绑定才有过滤器
          if (!/text|html/.test(data.type)) {
              throw Error("ms-" + data.type + "不支持过滤器")
          }
          code = "\nvar ret" + expose + " = " + code + ";\r\n"
          code += parseFilter("ret" + expose, filters)
          try {
              fn = Function.apply(noop, names.concat("'use strict';\n" + prefix + code))
              data.evaluator = evaluatorPool.put(exprId, function() {
                  return fn.apply(avalon, arguments)//确保可以在编译代码中使用this获取avalon对象
              })
          } catch (e) {
              log("debug: parse error," + e.message)
          }
          vars = assigns = names = null //释放内存
          return
      } else if (dataType === "duplex") { //双工绑定
          var _body = "'use strict';\nreturn function(vvv){\n\t" +
                  prefix +
                  ";\n\tif(!arguments.length){\n\t\treturn " +
                  code +
                  "\n\t}\n\t" + (!rduplex.test(code) ? vars.get : code) +
                  "= vvv;\n} "
          try {
              fn = Function.apply(noop, names.concat(_body))
              data.evaluator = evaluatorPool.put(exprId, fn)
          } catch (e) {
              log("debug: parse error," + e.message)
          }
          vars = assigns = names = null //释放内存
          return
      } else if (dataType === "on") { //事件绑定
          if (code.indexOf("(") === -1) {
              code += ".call(this, $event)"
          } else {
              code = code.replace("(", ".call(this,")
          }
          names.push("$event")
          code = "\nreturn " + code + ";" //IE全家 Function("return ")出错，需要Function("return ;")
          var lastIndex = code.lastIndexOf("\nreturn")
          var header = code.slice(0, lastIndex)
          var footer = code.slice(lastIndex)
          code = header + "\n" + footer
      } else { //其他绑定
          code = "\nreturn " + code + ";" //IE全家 Function("return ")出错，需要Function("return ;")
      }
      try {
          fn = Function.apply(noop, names.concat("'use strict';\n" + prefix + code))
          data.evaluator = evaluatorPool.put(exprId, fn)
      } catch (e) {
          log("debug: parse error," + e.message)
      }
      vars = assigns = names = null //释放内存
  }
  function stringifyExpr(code) {
      var hasExpr = rexpr.test(code) //比如ms-class="width{{w}}"的情况
      if (hasExpr) {
          var array = scanExpr(code)
          if (array.length === 1) {
              return array[0].value
          }
          return array.map(function (el) {
              return el.expr ? "(" + el.value + ")" : quote(el.value)
          }).join(" + ")
      } else {
          return code
      }
  }
  //parseExpr的智能引用代理
  
  function parseExprProxy(code, scopes, data, noRegister) {
      code = code || "" //code 可能未定义
      parseExpr(code, scopes, data)
      if (data.evaluator && !noRegister) {
          data.handler = bindingExecutors[data.handlerName || data.type]
          //方便调试
          //这里非常重要,我们通过判定视图刷新函数的element是否在DOM树决定
          //将它移出订阅者列表
          avalon.injectBinding(data)
      }
  }
  avalon.parseExprProxy = parseExprProxy
  /*********************************************************************
   *                           扫描系统                                 *
   **********************************************************************/
  
  avalon.scan = function(elem, vmodel) {
      elem = elem || root
      var vmodels = vmodel ? [].concat(vmodel) : []
      scanTag(elem, vmodels)
  }
  
  //http://www.w3.org/TR/html5/syntax.html#void-elements
  var stopScan = oneObject("area,base,basefont,br,col,command,embed,hr,img,input,link,meta,param,source,track,wbr,noscript,script,style,textarea".toUpperCase())
  
  function checkScan(elem, callback, innerHTML) {
      var id = setTimeout(function() {
          var currHTML = elem.innerHTML
          clearTimeout(id)
          if (currHTML === innerHTML) {
              callback()
          } else {
              checkScan(elem, callback, currHTML)
          }
      })
  }
  
  
  function createSignalTower(elem, vmodel) {
      var id = elem.getAttribute("avalonctrl") || vmodel.$id
      elem.setAttribute("avalonctrl", id)
      vmodel.$events.expr = elem.tagName + '[avalonctrl="' + id + '"]'
  }
  
  var getBindingCallback = function(elem, name, vmodels) {
      var callback = elem.getAttribute(name)
      if (callback) {
          for (var i = 0, vm; vm = vmodels[i++]; ) {
              if (vm.hasOwnProperty(callback) && typeof vm[callback] === "function") {
                  return vm[callback]
              }
          }
      }
  }
  
  function executeBindings(bindings, vmodels) {
      for (var i = 0, data; data = bindings[i++]; ) {
          data.vmodels = vmodels
          bindingHandlers[data.type](data, vmodels)
          if (data.evaluator && data.element && data.element.nodeType === 1) { //移除数据绑定，防止被二次解析
              //chrome使用removeAttributeNode移除不存在的特性节点时会报错 https://github.com/RubyLouvre/avalon/issues/99
              data.element.removeAttribute(data.name)
          }
      }
      bindings.length = 0
  }
  
  //https://github.com/RubyLouvre/avalon/issues/636
  var mergeTextNodes = IEVersion && window.MutationObserver ? function (elem) {
      var node = elem.firstChild, text
      while (node) {
          var aaa = node.nextSibling
          if (node.nodeType === 3) {
              if (text) {
                  text.nodeValue += node.nodeValue
                  elem.removeChild(node)
              } else {
                  text = node
              }
          } else {
              text = null
          }
          node = aaa
      }
  } : 0
  var roneTime = /^\s*::/
  var rmsAttr = /ms-(\w+)-?(.*)/
  var priorityMap = {
      "if": 10,
      "repeat": 90,
      "data": 100,
      "widget": 110,
      "each": 1400,
      "with": 1500,
      "duplex": 2000,
      "on": 3000
  }
  
  var events = oneObject("animationend,blur,change,input,click,dblclick,focus,keydown,keypress,keyup,mousedown,mouseenter,mouseleave,mousemove,mouseout,mouseover,mouseup,scan,scroll,submit")
  var obsoleteAttrs = oneObject("value,title,alt,checked,selected,disabled,readonly,enabled")
  function bindingSorter(a, b) {
      return a.priority - b.priority
  }
  
  function scanAttr(elem, vmodels, match) {
      var scanNode = true
      if (vmodels.length) {
          var attributes = getAttributes ? getAttributes(elem) : elem.attributes
          var bindings = []
          var fixAttrs = []
          var msData = {}
          var uniq = {}
          for (var i = 0, attr; attr = attributes[i++]; ) {
              if (attr.specified) {
                  if (match = attr.name.match(rmsAttr)) {
                      //如果是以指定前缀命名的
                      var type = match[1]
                      var param = match[2] || ""
                      var value = attr.value
                      var name = attr.name
                      if (uniq[name]) {//IE8下ms-repeat,ms-with BUG
                          continue
                      }
                      uniq[name] = 1
                      if (events[type]) {
                          param = type
                          type = "on"
                      } else if (obsoleteAttrs[type]) {
                          if (type === "enabled") {//吃掉ms-enabled绑定,用ms-disabled代替
                              log("warning!ms-enabled或ms-attr-enabled已经被废弃")
                              type = "disabled"
                              value = "!(" + value + ")"
                          }
                          param = type
                          type = "attr"
                          name = "ms-" + type + "-" + param
                          fixAttrs.push([attr.name, name, value])
                      }
                      msData[name] = value
                      if (typeof bindingHandlers[type] === "function") {
                          var newValue = value.replace(roneTime, "")
                          var oneTime = value !== newValue
                          var binding = {
                              type: type,
                              param: param,
                              element: elem,
                              name: name,
                              value: newValue,
                              oneTime: oneTime,
                              //chrome与firefox下Number(param)得到的值不一样 #855
                              priority: (priorityMap[type] || type.charCodeAt(0) * 10) + (Number(param.replace(/\D/g, "")) || 0)
                          }
                          if (type === "html" || type === "text") {
                              var token = getToken(value)
                              avalon.mix(binding, token)
                              binding.filters = binding.filters.replace(rhasHtml, function () {
                                  binding.type = "html"
                                  binding.group = 1
                                  return ""
                              })// jshint ignore:line
                          } else if (type === "duplex") {
                              var hasDuplex = name
                          } else if (name === "ms-if-loop") {
                              binding.priority += 100
                          }
                          bindings.push(binding)
                          if (type === "widget") {
                              elem.msData = elem.msData || msData
                          }
                      }
                  }
              }
          }
          if (bindings.length) {
              bindings.sort(bindingSorter)
              fixAttrs.forEach(function (arr) {
                  log("warning!请改用" + arr[1] + "代替" + arr[0] + "!")
                  elem.removeAttribute(arr[0])
                  elem.setAttribute(arr[1], arr[2])
              })
              //http://bugs.jquery.com/ticket/7071
              //在IE下对VML读取type属性,会让此元素所有属性都变成<Failed>
              if (hasDuplex && msData["ms-attr-value"] && !elem.scopeName && elem.type === "text") {
                  log("warning!一个控件不能同时定义ms-attr-value与" + hasDuplex)
              }
              for (i = 0; binding = bindings[i]; i++) {
                  type = binding.type
                  if (rnoscanAttrBinding.test(type)) {
                      return executeBindings(bindings.slice(0, i + 1), vmodels)
                  } else if (scanNode) {
                      scanNode = !rnoscanNodeBinding.test(type)
                  }
              }
              executeBindings(bindings, vmodels)
          }
      }
      if (scanNode && !stopScan[elem.tagName] && rbind.test(elem.innerHTML.replace(rlt, "<").replace(rgt, ">"))) {
          mergeTextNodes && mergeTextNodes(elem)
          scanNodeList(elem, vmodels) //扫描子孙元素
      }
  }
  var rnoscanAttrBinding = /^if|widget|repeat$/
  var rnoscanNodeBinding = /^each|with|html|include$/
  //IE67下，在循环绑定中，一个节点如果是通过cloneNode得到，自定义属性的specified为false，无法进入里面的分支，
  //但如果我们去掉scanAttr中的attr.specified检测，一个元素会有80+个特性节点（因为它不区分固有属性与自定义属性），很容易卡死页面
  if (!W3C) {
      var attrPool = new Cache(512)
      var rattrs = /\s+(ms-[^=\s]+)(?:=("[^"]*"|'[^']*'|[^\s>]+))?/g,
              rquote = /^['"]/,
              rtag = /<\w+\b(?:(["'])[^"]*?(\1)|[^>])*>/i,
              ramp = /&amp;/g
      //IE6-8解析HTML5新标签，会将它分解两个元素节点与一个文本节点
      //<body><section>ddd</section></body>
      //        window.onload = function() {
      //            var body = document.body
      //            for (var i = 0, el; el = body.children[i++]; ) {
      //                avalon.log(el.outerHTML)
      //            }
      //        }
      //依次输出<SECTION>, </SECTION>
      var getAttributes = function (elem) {
          var html = elem.outerHTML
          //处理IE6-8解析HTML5新标签的情况，及<br>等半闭合标签outerHTML为空的情况
          if (html.slice(0, 2) === "</" || !html.trim()) {
              return []
          }
          var str = html.match(rtag)[0]
          if(str.slice(-1) === ">"){
              str = str.slice(0,-1)
          }
          var attributes = [],
                  match,
                  k, v
          var ret = attrPool.get(str)
          if (ret) {
              return ret
          }
          while (k = rattrs.exec(str)) {
              v = k[2]
              if (v) {
                  v = (rquote.test(v) ? v.slice(1, -1) : v).replace(ramp, "&")
              }
              var name = k[1].toLowerCase()
              var binding = {
                  name: name,
                  specified: true,
                  value: v || ""
              }
              attributes.push(binding)
          }
          return attrPool.put(str, attributes)
      }
  }
  
  function scanNodeList(parent, vmodels) {
      var nodes = avalon.slice(parent.childNodes)
      scanNodeArray(nodes, vmodels)
  }
  
  function scanNodeArray(nodes, vmodels) {
      for (var i = 0, node; node = nodes[i++];) {
          switch (node.nodeType) {
              case 1:
                  scanTag(node, vmodels) //扫描元素节点
                  if (node.msCallback) {
                      node.msCallback()
                      node.msCallback = void 0
                  }
                  break
              case 3:
                 if(rexpr.test(node.nodeValue)){
                      scanText(node, vmodels, i) //扫描文本节点
                 }
                 break
          }
      }
  }
  
  
  function scanTag(elem, vmodels, node) {
      //扫描顺序  ms-skip(0) --> ms-important(1) --> ms-controller(2) --> ms-if(10) --> ms-repeat(100) 
      //--> ms-if-loop(110) --> ms-attr(970) ...--> ms-each(1400)-->ms-with(1500)--〉ms-duplex(2000)垫后
      var a = elem.getAttribute("ms-skip")
      //#360 在旧式IE中 Object标签在引入Flash等资源时,可能出现没有getAttributeNode,innerHTML的情形
      if (!elem.getAttributeNode) {
          return log("warning " + elem.tagName + " no getAttributeNode method")
      }
      var b = elem.getAttributeNode("ms-important")
      var c = elem.getAttributeNode("ms-controller")
      if (typeof a === "string") {
          return
      } else if (node = b || c) {
          var newVmodel = avalon.vmodels[node.value]
          if (!newVmodel) {
              return
          }
          //ms-important不包含父VM，ms-controller相反
          vmodels = node === b ? [newVmodel] : [newVmodel].concat(vmodels)
          var name = node.name
          elem.removeAttribute(name) //removeAttributeNode不会刷新[ms-controller]样式规则
          avalon(elem).removeClass(name)
          createSignalTower(elem, newVmodel)
      }
      scanAttr(elem, vmodels) //扫描特性节点
  }
  var rhasHtml = /\|\s*html(?:\b|$)/,
          r11a = /\|\|/g,
          rlt = /&lt;/g,
          rgt = /&gt;/g,
          rstringLiteral = /(['"])(\\\1|.)+?\1/g,
          rline = /\r?\n/g
  function getToken(value) {
      if (value.indexOf("|") > 0) {
          var scapegoat = value.replace(rstringLiteral, function (_) {
              return Array(_.length + 1).join("1")// jshint ignore:line
          })
          var index = scapegoat.replace(r11a, "\u1122\u3344").indexOf("|") //干掉所有短路或
          if (index > -1) {
              return {
                  filters: value.slice(index),
                  value: value.slice(0, index),
                  expr: true
              }
          }
      }
      return {
          value: value,
          filters: "",
          expr: true
      }
  }
  
  function scanExpr(str) {
      var tokens = [],
              value, start = 0,
              stop
      do {
          stop = str.indexOf(openTag, start)
          if (stop === -1) {
              break
          }
          value = str.slice(start, stop)
          if (value) { // {{ 左边的文本
              tokens.push({
                  value: value,
                  filters: "",
                  expr: false
              })
          }
          start = stop + openTag.length
          stop = str.indexOf(closeTag, start)
          if (stop === -1) {
              break
          }
          value = str.slice(start, stop)
          if (value) { //处理{{ }}插值表达式
              tokens.push(getToken(value.replace(rline,"")))
          }
          start = stop + closeTag.length
      } while (1)
      value = str.slice(start)
      if (value) { //}} 右边的文本
          tokens.push({
              value: value,
              expr: false,
              filters: ""
          })
      }
      return tokens
  }
  
  function scanText(textNode, vmodels) {
      var bindings = [], tokens = scanExpr(textNode.data)
      if (tokens.length) {
          for (var i = 0, token; token = tokens[i++]; ) {
              var node = DOC.createTextNode(token.value) //将文本转换为文本节点，并替换原来的文本节点
              if (token.expr) {
                  token.value = token.value.replace(roneTime, function () {
                      token.oneTime = true
                      return ""
                  })// jshint ignore:line
                  token.type = "text"
                  token.element = node
                  token.filters = token.filters.replace(rhasHtml, function (a, b,c) {
                      token.type = "html"
                      return ""
                  })// jshint ignore:line
                  bindings.push(token) //收集带有插值表达式的文本
              }
              avalonFragment.appendChild(node)
          }
          textNode.parentNode.replaceChild(avalonFragment, textNode)
          if (bindings.length)
              executeBindings(bindings, vmodels)
      }
  }
  
  var bools = ["autofocus,autoplay,async,allowTransparency,checked,controls",
      "declare,disabled,defer,defaultChecked,defaultSelected",
      "contentEditable,isMap,loop,multiple,noHref,noResize,noShade",
      "open,readOnly,selected"
  ].join(",")
  var boolMap = {}
  bools.replace(rword, function (name) {
      boolMap[name.toLowerCase()] = name
  })
  
  var propMap = {//属性名映射
      "accept-charset": "acceptCharset",
      "char": "ch",
      "charoff": "chOff",
      "class": "className",
      "for": "htmlFor",
      "http-equiv": "httpEquiv"
  }
  
  var anomaly = ["accessKey,bgColor,cellPadding,cellSpacing,codeBase,codeType,colSpan",
      "dateTime,defaultValue,frameBorder,longDesc,maxLength,marginWidth,marginHeight",
      "rowSpan,tabIndex,useMap,vSpace,valueType,vAlign"
  ].join(",")
  anomaly.replace(rword, function (name) {
      propMap[name.toLowerCase()] = name
  })
  
  var rnoscripts = /<noscript.*?>(?:[\s\S]+?)<\/noscript>/img
  var rnoscriptText = /<noscript.*?>([\s\S]+?)<\/noscript>/im
  
  var getXHR = function () {
      return new (window.XMLHttpRequest || ActiveXObject)("Microsoft.XMLHTTP") // jshint ignore:line
  }
  
  var templatePool = avalon.templateCache = {}
  
  bindingHandlers.attr = function (data, vmodels) {
      var value = stringifyExpr(data.value.trim())
      if (data.type === "include") {
          var elem = data.element
          data.includeRendered = getBindingCallback(elem, "data-include-rendered", vmodels)
          data.includeLoaded = getBindingCallback(elem, "data-include-loaded", vmodels)
          var outer = data.includeReplace = !!avalon(elem).data("includeReplace")
          if (avalon(elem).data("includeCache")) {
              data.templateCache = {}
          }
          data.startInclude = DOC.createComment("ms-include")
          data.endInclude = DOC.createComment("ms-include-end")
          if (outer) {
              data.element = data.startInclude
              elem.parentNode.insertBefore(data.startInclude, elem)
              elem.parentNode.insertBefore(data.endInclude, elem.nextSibling)
          } else {
              elem.insertBefore(data.startInclude, elem.firstChild)
              elem.appendChild(data.endInclude)
          }
      }
      data.handlerName = "attr" //handleName用于处理多种绑定共用同一种bindingExecutor的情况
      parseExprProxy(value, vmodels, data)
  }
  
  bindingExecutors.attr = function (val, elem, data) {
      var method = data.type,
              attrName = data.param
      if (method === "css") {
          avalon(elem).css(attrName, val)
      } else if (method === "attr") {
  
          // ms-attr-class="xxx" vm.xxx="aaa bbb ccc"将元素的className设置为aaa bbb ccc
          // ms-attr-class="xxx" vm.xxx=false  清空元素的所有类名
          // ms-attr-name="yyy"  vm.yyy="ooo" 为元素设置name属性
          var toRemove = (val === false) || (val === null) || (val === void 0)
  
          if (!W3C && propMap[attrName]) { //旧式IE下需要进行名字映射
              attrName = propMap[attrName]
          }
          var bool = boolMap[attrName]
          if (typeof elem[bool] === "boolean") {
              elem[bool] = !!val //布尔属性必须使用el.xxx = true|false方式设值
              if (!val) { //如果为false, IE全系列下相当于setAttribute(xxx,''),会影响到样式,需要进一步处理
                  toRemove = true
              }
          }
          if (toRemove) {
              return elem.removeAttribute(attrName)
          }
          //SVG只能使用setAttribute(xxx, yyy), VML只能使用elem.xxx = yyy ,HTML的固有属性必须elem.xxx = yyy
          var isInnate = rsvg.test(elem) ? false : (DOC.namespaces && isVML(elem)) ? true : attrName in elem.cloneNode(false)
          if (isInnate) {
              elem[attrName] = val + ""
          } else {
              elem.setAttribute(attrName, val)
          }
      } else if (method === "include" && val) {
          var vmodels = data.vmodels
          var rendered = data.includeRendered
          var loaded = data.includeLoaded
          var replace = data.includeReplace
          var target = replace ? elem.parentNode : elem
          var scanTemplate = function (text) {
              if (data.vmodels === null) {
                  return
              }
  
              if (loaded) {
                  var newText = loaded.apply(target, [text].concat(vmodels))
                  if (typeof newText === "string")
                      text = newText
              }
              if (rendered) {
                  checkScan(target, function () {
                      rendered.call(target)
                  }, NaN)
              }
              var lastID = data.includeLastID
              if (data.templateCache && lastID && lastID !== val) {
                  var lastTemplate = data.templateCache[lastID]
                  if (!lastTemplate) {
                      lastTemplate = data.templateCache[lastID] = DOC.createElement("div")
                      ifGroup.appendChild(lastTemplate)
                  }
              }
              data.includeLastID = val
              while (data.startInclude) {
                  var node = data.startInclude.nextSibling
                  if (node && node !== data.endInclude) {
                      target.removeChild(node)
                      if (lastTemplate)
                          lastTemplate.appendChild(node)
                  } else {
                      break
                  }
              }
              var dom = getTemplateNodes(data, val, text)
              var nodes = avalon.slice(dom.childNodes)
              target.insertBefore(dom, data.endInclude)
              scanNodeArray(nodes, vmodels)
          }
  
          if (data.param === "src") {
              if (typeof templatePool[val] === "string") {
                  avalon.nextTick(function () {
                      scanTemplate(templatePool[val])
                  })
              } else if (Array.isArray(templatePool[val])) { //#805 防止在循环绑定中发出许多相同的请求
                  templatePool[val].push(scanTemplate)
              } else {
                  var xhr = getXHR()
                  xhr.onreadystatechange = function () {
                      if (xhr.readyState === 4) {
                          var s = xhr.status
                          if (s >= 200 && s < 300 || s === 304 || s === 1223) {
                              var text = xhr.responseText
                              for (var f = 0, fn; fn = templatePool[val][f++]; ) {
                                  fn(text)
                              }
                              templatePool[val] = text
                          }
                      }
                  }
                  templatePool[val] = [scanTemplate]
                  xhr.open("GET", val, true)
                  if ("withCredentials" in xhr) {
                      xhr.withCredentials = true
                  }
                  xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest")
                  xhr.send(null)
              }
          } else {
              //IE系列与够新的标准浏览器支持通过ID取得元素（firefox14+）
              //http://tjvantoll.com/2012/07/19/dom-element-references-as-global-variables/
              var el = val && val.nodeType === 1 ? val : DOC.getElementById(val)
              if (el) {
                  if (el.tagName === "NOSCRIPT" && !(el.innerHTML || el.fixIE78)) { //IE7-8 innerText,innerHTML都无法取得其内容，IE6能取得其innerHTML
                      xhr = getXHR() //IE9-11与chrome的innerHTML会得到转义的内容，它们的innerText可以
                      xhr.open("GET", location, false) //谢谢Nodejs 乱炖群 深圳-纯属虚构
                      xhr.send(null)
                      //http://bbs.csdn.net/topics/390349046?page=1#post-393492653
                      var noscripts = DOC.getElementsByTagName("noscript")
                      var array = (xhr.responseText || "").match(rnoscripts) || []
                      var n = array.length
                      for (var i = 0; i < n; i++) {
                          var tag = noscripts[i]
                          if (tag) { //IE6-8中noscript标签的innerHTML,innerText是只读的
                              tag.style.display = "none" //http://haslayout.net/css/noscript-Ghost-Bug
                              tag.fixIE78 = (array[i].match(rnoscriptText) || ["", "&nbsp;"])[1]
                          }
                      }
                  }
                  avalon.nextTick(function () {
                      scanTemplate(el.fixIE78 || el.value || el.innerText || el.innerHTML)
                  })
              }
          }
      } else {
          if (!root.hasAttribute && typeof val === "string" && (method === "src" || method === "href")) {
              val = val.replace(/&amp;/g, "&") //处理IE67自动转义的问题
          }
          elem[method] = val
          if (window.chrome && elem.tagName === "EMBED") {
              var parent = elem.parentNode //#525  chrome1-37下embed标签动态设置src不能发生请求
              var comment = document.createComment("ms-src")
              parent.replaceChild(comment, elem)
              parent.replaceChild(elem, comment)
          }
      }
  }
  
  function getTemplateNodes(data, id, text) {
      var div = data.templateCache && data.templateCache[id]
      if (div) {
          var dom = DOC.createDocumentFragment(),
                  firstChild
          while (firstChild = div.firstChild) {
              dom.appendChild(firstChild)
          }
          return dom
      }
      return avalon.parseHTML(text)
  }
  
  //这几个指令都可以使用插值表达式，如ms-src="aaa/{{b}}/{{c}}.html"
  "title,alt,src,value,css,include,href".replace(rword, function (name) {
      bindingHandlers[name] = bindingHandlers.attr
  })
  //根据VM的属性值或表达式的值切换类名，ms-class="xxx yyy zzz:flag" 
  //http://www.cnblogs.com/rubylouvre/archive/2012/12/17/2818540.html
  bindingHandlers["class"] = function (binding, vmodels) {
      var oldStyle = binding.param,
              text = binding.value,
              rightExpr
      binding.handlerName = "class"
      if (!oldStyle || isFinite(oldStyle)) {
          binding.param = "" //去掉数字
          var colonIndex = text.replace(rexprg, function (a) {
              return a.replace(/./g, "0")
          }).indexOf(":") //取得第一个冒号的位置
          if (colonIndex === -1) { // 比如 ms-class="aaa bbb ccc" 的情况
              var className = text
              rightExpr = true
          } else { // 比如 ms-class-1="ui-state-active:checked" 的情况
              className = text.slice(0, colonIndex)
              rightExpr = text.slice(colonIndex + 1)
          }
          if (!rexpr.test(text)) {
              className = quote(className)
          } else {
              className = stringifyExpr(className)
          }
          binding.expr = "[" + className + "," + rightExpr + "]"
      } else {
          binding.expr = '[' + quote(oldStyle) + "," + text + "]"
          binding.oldStyle = oldStyle
      }
      var method = binding.type
      if (method === "hover" || method === "active") { //确保只绑定一次
          if (!binding.hasBindEvent) {
              var elem = binding.element
              var $elem = avalon(elem)
              var activate = "mouseenter" //在移出移入时切换类名
              var abandon = "mouseleave"
              if (method === "active") { //在聚焦失焦中切换类名
                  elem.tabIndex = elem.tabIndex || -1
                  activate = "mousedown"
                  abandon = "mouseup"
                  var fn0 = $elem.bind("mouseleave", function () {
                      binding.toggleClass && $elem.removeClass(binding.newClass)
                  })
              }
          }
  
          var fn1 = $elem.bind(activate, function () {
              binding.toggleClass && $elem.addClass(binding.newClass)
          })
          var fn2 = $elem.bind(abandon, function () {
              binding.toggleClass && $elem.removeClass(binding.newClass)
          })
          binding.rollback = function () {
              $elem.unbind("mouseleave", fn0)
              $elem.unbind(activate, fn1)
              $elem.unbind(abandon, fn2)
          }
          binding.hasBindEvent = true
      }
      parseExprProxy(binding.expr, vmodels, binding)
  }
  
  bindingExecutors["class"] = function (arr, elem, binding) {
      var $elem = avalon(elem)
      binding.newClass = arr[0]
      binding.toggleClass = !!arr[1]
      if (binding.oldClass && binding.newClass !== binding.oldClass) {
          $elem.removeClass(binding.oldClass)
      }
      binding.oldClass = binding.newClass
      if (binding.type === "class") {
          if (binding.oldStyle) {
              $elem.toggleClass(binding.oldStyle, !!arr[1])
          } else {
              $elem.toggleClass(binding.newClass, binding.toggleClass)
          }
      }
  
  }
  
  "hover,active".replace(rword, function (method) {
      bindingHandlers[method] = bindingHandlers["class"]
  })
  //ms-controller绑定已经在scanTag 方法中实现
  //ms-css绑定已由ms-attr绑定实现
  
  
  // bindingHandlers.data 定义在if.js
  bindingExecutors.data = function(val, elem, data) {
  	var key = "data-" + data.param
  	if (val && typeof val === "object") {
  		elem[key] = val
  	} else {
  		elem.setAttribute(key, String(val))
  	}
  }
  //双工绑定
  var duplexBinding = bindingHandlers.duplex = function(data, vmodels) {
      var elem = data.element,
          hasCast
          parseExprProxy(data.value, vmodels, data, 1)
  
          data.changed = getBindingCallback(elem, "data-duplex-changed", vmodels) || noop
      if (data.evaluator && data.args) {
          var params = []
          var casting = oneObject("string,number,boolean,checked")
          if (elem.type === "radio" && data.param === "") {
              data.param = "checked"
          }
          if (elem.msData) {
              elem.msData["ms-duplex"] = data.value
          }
          data.param.replace(/\w+/g, function(name) {
              if (/^(checkbox|radio)$/.test(elem.type) && /^(radio|checked)$/.test(name)) {
                  if (name === "radio")
                      log("ms-duplex-radio已经更名为ms-duplex-checked")
                  name = "checked"
                  data.isChecked = true
              }
              if (name === "bool") {
                  name = "boolean"
                  log("ms-duplex-bool已经更名为ms-duplex-boolean")
              } else if (name === "text") {
                  name = "string"
                  log("ms-duplex-text已经更名为ms-duplex-string")
              }
              if (casting[name]) {
                  hasCast = true
              }
              avalon.Array.ensure(params, name)
          })
          if (!hasCast) {
              params.push("string")
          }
          data.param = params.join("-")
          data.bound = function(type, callback) {
              if (elem.addEventListener) {
                  elem.addEventListener(type, callback, false)
              } else {
                  elem.attachEvent("on" + type, callback)
              }
              var old = data.rollback
              data.rollback = function() {
                  elem.avalonSetter = null
                  avalon.unbind(elem, type, callback)
                  old && old()
              }
          }
          for (var i in avalon.vmodels) {
              var v = avalon.vmodels[i]
              v.$fire("avalon-ms-duplex-init", data)
          }
          var cpipe = data.pipe || (data.pipe = pipe)
          cpipe(null, data, "init")
          var tagName = elem.tagName
          duplexBinding[tagName] && duplexBinding[tagName](elem, data.evaluator.apply(null, data.args), data)
      }
  }
  //不存在 bindingExecutors.duplex
  
      function fixNull(val) {
          return val == null ? "" : val
      }
  avalon.duplexHooks = {
      checked: {
          get: function(val, data) {
              return !data.element.oldValue
          }
      },
      string: {
          get: function(val) { //同步到VM
              return val
          },
          set: fixNull
      },
      "boolean": {
          get: function(val) {
              return val === "true"
          },
          set: fixNull
      },
      number: {
          get: function(val, data) {
              var number = parseFloat(val)
              if (-val === -number) {
                  return number
              }
              var arr = /strong|medium|weak/.exec(data.element.getAttribute("data-duplex-number")) || ["medium"]
              switch (arr[0]) {
                  case "strong":
                      return 0
                  case "medium":
                      return val === "" ? "" : 0
                  case "weak":
                      return val
              }
          },
          set: fixNull
      }
  }
  
  function pipe(val, data, action, e) {
      data.param.replace(/\w+/g, function(name) {
          var hook = avalon.duplexHooks[name]
          if (hook && typeof hook[action] === "function") {
              val = hook[action](val, data)
          }
      })
      return val
  }
  
  var TimerID, ribbon = []
  
      avalon.tick = function(fn) {
          if (ribbon.push(fn) === 1) {
              TimerID = setInterval(ticker, 60)
          }
      }
  
      function ticker() {
          for (var n = ribbon.length - 1; n >= 0; n--) {
              var el = ribbon[n]
              if (el() === false) {
                  ribbon.splice(n, 1)
              }
          }
          if (!ribbon.length) {
              clearInterval(TimerID)
          }
      }
  
  var watchValueInTimer = noop
  new function() { // jshint ignore:line
      try { //#272 IE9-IE11, firefox
          var setters = {}
          var aproto = HTMLInputElement.prototype
          var bproto = HTMLTextAreaElement.prototype
          function newSetter(value) { // jshint ignore:line
                  setters[this.tagName].call(this, value)
                  if (!this.msFocus && this.avalonSetter) {
                      this.avalonSetter()
                  }
          }
          var inputProto = HTMLInputElement.prototype
          Object.getOwnPropertyNames(inputProto) //故意引发IE6-8等浏览器报错
          setters["INPUT"] = Object.getOwnPropertyDescriptor(aproto, "value").set
      
          Object.defineProperty(aproto, "value", {
              set: newSetter
          })
          setters["TEXTAREA"] = Object.getOwnPropertyDescriptor(bproto, "value").set
          Object.defineProperty(bproto, "value", {
              set: newSetter
          })
      } catch (e) {
          //在chrome 43中 ms-duplex终于不需要使用定时器实现双向绑定了
          // http://updates.html5rocks.com/2015/04/DOM-attributes-now-on-the-prototype
          // https://docs.google.com/document/d/1jwA8mtClwxI-QJuHT7872Z0pxpZz8PBkf2bGAbsUtqs/edit?pli=1
          watchValueInTimer = avalon.tick
      }
  } // jshint ignore:line
  if (IEVersion) {
      avalon.bind(DOC, "selectionchange", function (e) {
          var el = DOC.activeElement || {}
          if (!el.msFocus && el.avalonSetter) {
              el.avalonSetter()
          }
      })
  }
  var rnoduplex = /^(file|button|reset|submit|checkbox|radio|range)$/
  //处理radio, checkbox, text, textarea, password
  duplexBinding.INPUT = function (elem, evaluator, data) {
      var $type = elem.type,
              bound = data.bound,
              $elem = avalon(elem),
              composing = false
  
      function callback(value) {
          data.changed.call(this, value, data)
      }
  
      function compositionStart() {
          composing = true
      }
  
      function compositionEnd() {
          composing = false
      }
      var IE9Value
      //当value变化时改变model的值
      var updateVModel = function () {
          var val = elem.value //防止递归调用形成死循环
          if (composing || val === IE9Value) //处理中文输入法在minlengh下引发的BUG
              return
          var lastValue = data.pipe(val, data, "get")
          if ($elem.data("duplexObserve") !== false) {
              IE9Value = val
              evaluator(lastValue)
              callback.call(elem, lastValue)
          }
      }
      //当model变化时,它就会改变value的值
      data.handler = function () {
          var val = data.pipe(evaluator(), data, "set")  //fix #673 #1106
          if (val !== IE9Value) {
              var fixCaret = false
              if (elem.msFocus) {
                  try {
                      var pos = getCaret(elem)
                      if (pos.start === pos.end) {
                          pos = pos.start
                          fixCaret = true
                      }
                  } catch (e) {
                  }
              }
              elem.value = IE9Value = val
              if (fixCaret && !elem.readyOnly) {
                  setCaret(elem, pos, pos)
              }
          }
      }
      if (data.isChecked || $type === "radio") {
          var IE6 = IEVersion === 6
          updateVModel = function () {
              if ($elem.data("duplexObserve") !== false) {
                  var lastValue = data.pipe(elem.value, data, "get")
                  evaluator(lastValue)
                  callback.call(elem, lastValue)
              }
          }
          data.handler = function () {
              var val = evaluator()
              var checked = data.isChecked ? !!val : val + "" === elem.value
              elem.oldValue = checked
              if (IE6) {
                  setTimeout(function () {
                      //IE8 checkbox, radio是使用defaultChecked控制选中状态，
                      //并且要先设置defaultChecked后设置checked
                      //并且必须设置延迟
                      elem.defaultChecked = checked
                      elem.checked = checked
                  }, 31)
              } else {
                  elem.checked = checked
              }
          }
          bound("click", updateVModel)
      } else if ($type === "checkbox") {
          updateVModel = function () {
              if ($elem.data("duplexObserve") !== false) {
                  var method = elem.checked ? "ensure" : "remove"
                  var array = evaluator()
                  if (!Array.isArray(array)) {
                      log("ms-duplex应用于checkbox上要对应一个数组")
                      array = [array]
                  }
                  var val = data.pipe(elem.value, data, "get")
                  avalon.Array[method](array, val)
                  callback.call(elem, array)
              }
          }
  
          data.handler = function () {
              var array = [].concat(evaluator()) //强制转换为数组
              var val = data.pipe(elem.value, data, "get")
              elem.checked = array.indexOf(val) > -1
          }
          bound(W3C ? "change" : "click", updateVModel)
      } else {
          var events = elem.getAttribute("data-duplex-event") || "input"
          if (elem.attributes["data-event"]) {
              log("data-event指令已经废弃，请改用data-duplex-event")
          }
  
          function delay(e) { // jshint ignore:line
              setTimeout(function () {
                  updateVModel(e)
              })
          }
          events.replace(rword, function (name) {
              switch (name) {
                  case "input":
                      if (!IEVersion) { // W3C
                          bound("input", updateVModel)
                          //非IE浏览器才用这个
                          bound("compositionstart", compositionStart)
                          bound("compositionend", compositionEnd)
                          bound("DOMAutoComplete", updateVModel)
                      } else { 
                          // IE下通过selectionchange事件监听IE9+点击input右边的X的清空行为，及粘贴，剪切，删除行为
                          if (IEVersion > 8) {
                              if(IEVersion === 9){
                                  //IE9删除字符后再失去焦点不会同步 #1167
                                  bound("keyup", updateVModel)
                              }
                              //IE9使用propertychange无法监听中文输入改动
                              bound("input", updateVModel) 
                          } else {
                              //onpropertychange事件无法区分是程序触发还是用户触发
                              //IE6-8下第一次修改时不会触发,需要使用keydown或selectionchange修正
                              bound("propertychange", function (e) { 
                                  if (e.propertyName === "value") {
                                      updateVModel()
                                  }
                              })
                          }
                          bound("dragend", delay)
                          //http://www.cnblogs.com/rubylouvre/archive/2013/02/17/2914604.html
                          //http://www.matts411.com/post/internet-explorer-9-oninput/
                      }
                      break
                  default:
                      bound(name, updateVModel)
                      break
              }
          })
  
  
          if (!rnoduplex.test(elem.type)) {
              if (elem.type !== "hidden") {
                  bound("focus", function () {
                      elem.msFocus = true
                  })
                  bound("blur", function () {
                      elem.msFocus = false
                  })
              }
  
              elem.avalonSetter = updateVModel //#765
              watchValueInTimer(function () {
                  if (root.contains(elem)) {
                      if (!elem.msFocus ) {
                          updateVModel()
                      }
                  } else if (!elem.msRetain) {
                      return false
                  }
              })
          }
  
      }
  
      avalon.injectBinding(data)
      callback.call(elem, elem.value)
  }
  duplexBinding.TEXTAREA = duplexBinding.INPUT
  function getCaret(ctrl) {
      var start = NaN, end = NaN   
      //https://github.com/RobinHerbots/jquery.inputmask/blob/3.x/js/inputmask.js#L1736
      if (ctrl.setSelectionRange) {
          start = ctrl.selectionStart
          end = ctrl.selectionEnd
      } else {
          var range = document.selection.createRange()
          start = 0 - range.duplicate().moveStart('character', -100000)
          end = start + range.text.length
      }
      return {
          start: start,
          end: end
      }
  }
  function setCaret(ctrl, begin, end) {
      if (!ctrl.value || ctrl.readOnly)
          return
      if (ctrl.createTextRange) {//IE6-8
          var range = ctrl.createTextRange()
          range.collapse(true)
          range.moveStart("character", begin)
          range.select()
      } else {
          ctrl.selectionStart = begin
          ctrl.selectionEnd = end
      }
  }
  duplexBinding.SELECT = function(element, evaluator, data) {
      var $elem = avalon(element)
  
          function updateVModel() {
              if ($elem.data("duplexObserve") !== false) {
                  var val = $elem.val() //字符串或字符串数组
                  if (Array.isArray(val)) {
                      val = val.map(function(v) {
                          return data.pipe(v, data, "get")
                      })
                  } else {
                      val = data.pipe(val, data, "get")
                  }
                  if (val + "" !== element.oldValue) {
                      evaluator(val)
                  }
                  data.changed.call(element, val, data)
              }
          }
      data.handler = function() {
          var val = evaluator()
          val = val && val.$model || val
          if (Array.isArray(val)) {
              if (!element.multiple) {
                  log("ms-duplex在<select multiple=true>上要求对应一个数组")
              }
          } else {
              if (element.multiple) {
                  log("ms-duplex在<select multiple=false>不能对应一个数组")
              }
          }
          //必须变成字符串后才能比较
          val = Array.isArray(val) ? val.map(String) : val + ""
          if (val + "" !== element.oldValue) {
              $elem.val(val)
              element.oldValue = val + ""
          }
      }
      data.bound("change", updateVModel)
      element.msCallback = function() {
          avalon.injectBinding(data)
          data.changed.call(element, evaluator(), data)
      }
  }
  // bindingHandlers.html 定义在if.js
  bindingExecutors.html = function (val, elem, data) {
      var isHtmlFilter = elem.nodeType !== 1
      var parent = isHtmlFilter ? elem.parentNode : elem
      if (!parent)
          return
      val = val == null ? "" : val
      if (data.oldText !== val) {
          data.oldText = val
      } else {
          return
      }
      if (elem.nodeType === 3) {
          var signature = generateID("html")
          parent.insertBefore(DOC.createComment(signature), elem)
          data.element = DOC.createComment(signature + ":end")
          parent.replaceChild(data.element, elem)
          elem = data.element
      }
      if (typeof val !== "object") {//string, number, boolean
          var fragment = avalon.parseHTML(String(val))
      } else if (val.nodeType === 11) { //将val转换为文档碎片
          fragment = val
      } else if (val.nodeType === 1 || val.item) {
          var nodes = val.nodeType === 1 ? val.childNodes : val.item
          fragment = avalonFragment.cloneNode(true)
          while (nodes[0]) {
              fragment.appendChild(nodes[0])
          }
      }
  
      nodes = avalon.slice(fragment.childNodes)
      //插入占位符, 如果是过滤器,需要有节制地移除指定的数量,如果是html指令,直接清空
      if (isHtmlFilter) {
          var endValue = elem.nodeValue.slice(0, -4)
          while (true) {
              var node = elem.previousSibling
              if (!node || node.nodeType === 8 && node.nodeValue === endValue) {
                  break
              } else {
                  parent.removeChild(node)
              }
          }
          parent.insertBefore(fragment, elem)
      } else {
          avalon.clearHTML(elem).appendChild(fragment)
      }
      scanNodeArray(nodes, data.vmodels)
  }
  bindingHandlers["if"] =
      bindingHandlers.data =
      bindingHandlers.text =
      bindingHandlers.html =
      function(data, vmodels) {
          parseExprProxy(data.value, vmodels, data)
  }
  
  bindingExecutors["if"] = function(val, elem, data) {
       try {
           if(!elem.parentNode) return
       } catch(e) {return}
      if (val) { //插回DOM树
          if (elem.nodeType === 8) {
              elem.parentNode.replaceChild(data.template, elem)
              elem.ifRemove = null
           //   animate.enter(data.template, elem.parentNode)
              elem = data.element = data.template //这时可能为null
          }
          if (elem.getAttribute(data.name)) {
              elem.removeAttribute(data.name)
              scanAttr(elem, data.vmodels)
          }
          data.rollback = null
      } else { //移出DOM树，并用注释节点占据原位置
          if (elem.nodeType === 1) {
              var node = data.element = DOC.createComment("ms-if")
              elem.parentNode.replaceChild(node, elem)
              elem.ifRemove = node
         //     animate.leave(elem, node.parentNode, node)
              data.template = elem //元素节点
              ifGroup.appendChild(elem)
              data.rollback = function() {
                  if (elem.parentNode === ifGroup) {
                      ifGroup.removeChild(elem)
                  }
              }
          }
      }
  }
  //ms-important绑定已经在scanTag 方法中实现
  //ms-include绑定已由ms-attr绑定实现
  
  var rdash = /\(([^)]*)\)/
  bindingHandlers.on = function(data, vmodels) {
      var value = data.value
      data.type = "on"
      var eventType = data.param.replace(/-\d+$/, "") // ms-on-mousemove-10
      if (typeof bindingHandlers.on[eventType + "Hook"] === "function") {
          bindingHandlers.on[eventType + "Hook"](data)
      }
      if (value.indexOf("(") > 0 && value.indexOf(")") > -1) {
          var matched = (value.match(rdash) || ["", ""])[1].trim()
          if (matched === "" || matched === "$event") { // aaa() aaa($event)当成aaa处理
              value = value.replace(rdash, "")
          }
      }
      parseExprProxy(value, vmodels, data)
  }
  
  bindingExecutors.on = function(callback, elem, data) {
      callback = function(e) {
          var fn = data.evaluator || noop
          return fn.apply(this, data.args.concat(e))
      }
      var eventType = data.param.replace(/-\d+$/, "") // ms-on-mousemove-10
      if (eventType === "scan") {
          callback.call(elem, {
              type: eventType
          })
      } else if (typeof data.specialBind === "function") {
          data.specialBind(elem, callback)
      } else {
          var removeFn = avalon.bind(elem, eventType, callback)
      }
      data.rollback = function() {
          if (typeof data.specialUnbind === "function") {
              data.specialUnbind()
          } else {
              avalon.unbind(elem, eventType, removeFn)
          }
      }
  }
  bindingHandlers.repeat = function (data, vmodels) {
      var type = data.type
      parseExprProxy(data.value, vmodels, data, 1)
      data.proxies = []
      var freturn = false
      try {
          var $repeat = data.$repeat = data.evaluator.apply(0, data.args || [])
          var xtype = avalon.type($repeat)
          if (xtype !== "object" && xtype !== "array") {
              freturn = true
              avalon.log("warning:" + data.value + "只能是对象或数组")
          } else {
              data.xtype = xtype
          }
      } catch (e) {
          freturn = true
      }
      var arr = data.value.split(".") || []
      if (arr.length > 1) {
          arr.pop()
          var n = arr[0]
          for (var i = 0, v; v = vmodels[i++]; ) {
              if (v && v.hasOwnProperty(n)) {
                  var events = v[n].$events || {}
                  events[subscribers] = events[subscribers] || []
                  injectDependency(events[subscribers], data)
                  break
              }
          }
      }
  
      var oldHandler = data.handler
      data.handler = noop
      avalon.injectBinding(data)
      data.handler = oldHandler
  
      var elem = data.element
      if (elem.nodeType === 1) {
          elem.removeAttribute(data.name)
          data.sortedCallback = getBindingCallback(elem, "data-with-sorted", vmodels)
          data.renderedCallback = getBindingCallback(elem, "data-" + type + "-rendered", vmodels)
          var signature = generateID(type)
          var start = DOC.createComment(signature)
          var end = DOC.createComment(signature + ":end")
          data.signature = signature
          data.template = avalonFragment.cloneNode(false)
          if (type === "repeat") {
              var parent = elem.parentNode
              parent.replaceChild(end, elem)
              parent.insertBefore(start, end)
              data.template.appendChild(elem)
          } else {
              while (elem.firstChild) {
                  data.template.appendChild(elem.firstChild)
              }
              elem.appendChild(start)
              elem.appendChild(end)
          }
          data.element = end
          data.handler = bindingExecutors.repeat
          data.rollback = function () {
              var elem = data.element
              if (!elem)
                  return
              data.handler("clear")
          }
      }
  
      if (freturn) {
          return
      }
  
      data.$outer = {}
      var check0 = "$key"
      var check1 = "$val"
      if (Array.isArray($repeat)) {
          check0 = "$first"
          check1 = "$last"
      }
  
      for (i = 0; v = vmodels[i++]; ) {
          if (v.hasOwnProperty(check0) && v.hasOwnProperty(check1)) {
              data.$outer = v
              break
          }
      }
      var $events = $repeat.$events
      var $list = ($events || {})[subscribers]
      injectDependency($list, data)
      if (xtype === "object") {
          data.handler("append")
      } else if ($repeat.length) {
          data.handler("add", 0, $repeat.length)
      }
  }
  
  bindingExecutors.repeat = function (method, pos, el) {
      var data = this
      if (!method && data.xtype) {
          var old = data.$repeat
          var neo = data.evaluator.apply(0, data.args || [])
  
          if (data.xtype === "array") {
              if (old.length === neo.length) {
                  if (old !== neo && old.length > 0) {
                      bindingExecutors.repeat.call(this, 'clear', pos, el)
                  }
                  else {
                      return
                  }
              }
              method = "add"
              pos = 0
              data.$repeat = neo
              el = neo.length
          } else {
              if (keysVM(old).join(";;") === keysVM(neo).join(";;")) {
                  return
              }
              method = "append"
              data.$repeat = neo
          }
      }
      if (method) {
          var start, fragment
          var end = data.element
          var comments = getComments(data)
          var parent = end.parentNode
          var proxies = data.proxies
          var transation = avalonFragment.cloneNode(false)
          switch (method) {
              case "add": //在pos位置后添加el数组（pos为插入位置,el为要插入的个数）
                  var n = pos + el
                  var fragments = []
                  for (var i = pos; i < n; i++) {
                      var proxy = eachProxyAgent(i, data)
                      proxies.splice(i, 0, proxy)
                      shimController(data, transation, proxy, fragments)
                  }
                  parent.insertBefore(transation, comments[pos] || end)
                  for (i = 0; fragment = fragments[i++]; ) {
                      scanNodeArray(fragment.nodes, fragment.vmodels)
                      fragment.nodes = fragment.vmodels = null
                  }
  
                  break
              case "del": //将pos后的el个元素删掉(pos, el都是数字)
                  sweepNodes(comments[pos], comments[pos + el] || end)
                  var removed = proxies.splice(pos, el)
                  recycleProxies(removed, "each")
                  break
              case "clear":
                  start = comments[0]
                  if (start) {
                      sweepNodes(start, end)
                      if (data.xtype === "object") {
                          parent.insertBefore(start, end)
                      }else{
                          recycleProxies(proxies, "each")
                      }
                  }
                  break
              case "move":
                  start = comments[0]
                  if (start) {
                      var signature = start.nodeValue
                      var rooms = []
                      var room = [],
                              node
                      sweepNodes(start, end, function () {
                          room.unshift(this)
                          if (this.nodeValue === signature) {
                              rooms.unshift(room)
                              room = []
                          }
                      })
                      sortByIndex(rooms, pos)
                      sortByIndex(proxies, pos)
                      while (room = rooms.shift()) {
                          while (node = room.shift()) {
                              transation.appendChild(node)
                          }
                      }
                      parent.insertBefore(transation, end)
                  }
                  break
              case "index": //将proxies中的第pos个起的所有元素重新索引
                  var last = proxies.length - 1
                  for (; el = proxies[pos]; pos++) {
                      el.$index = pos
                      el.$first = pos === 0
                      el.$last = pos === last
                  }
                  return
              case "set": //将proxies中的第pos个元素的VM设置为el（pos为数字，el任意）
                  proxy = proxies[pos]
                  if (proxy) {
                      fireDependencies(proxy.$events[data.param || "el"])
                  }
                  break
              case "append":
                  var object = data.$repeat //原来第2参数， 被循环对象
                  var pool = Array.isArray(proxies) ||!proxies ?  {}: proxies   //代理对象组成的hash
                  data.proxies = pool
                  var keys = []
                  fragments = []
                  for (var key in pool) {
                      if (!object.hasOwnProperty(key)) {
                          proxyRecycler(pool[key], withProxyPool) //去掉之前的代理VM
                          delete(pool[key])
                      }
                  }
                  for (key in object) { //得到所有键名
                      if (object.hasOwnProperty(key) && key !== "hasOwnProperty") {
                          keys.push(key)
                      }
                  }
                  if (data.sortedCallback) { //如果有回调，则让它们排序
                      var keys2 = data.sortedCallback.call(parent, keys)
                      if (keys2 && Array.isArray(keys2) && keys2.length) {
                          keys = keys2
                      }
                  }
                  for (i = 0; key = keys[i++]; ) {
                      if (key !== "hasOwnProperty") {
                          pool[key] = withProxyAgent(pool[key], key, data)
                          shimController(data, transation, pool[key], fragments)
                      }
                  }
  
                  parent.insertBefore(transation, end)
                  for (i = 0; fragment = fragments[i++]; ) {
                      scanNodeArray(fragment.nodes, fragment.vmodels)
                      fragment.nodes = fragment.vmodels = null
                  }
                  break
          }
          if (!data.$repeat || data.$repeat.hasOwnProperty("$lock")) //IE6-8 VBScript对象会报错, 有时候data.$repeat不存在
              return
          if (method === "clear")
              method = "del"
          var callback = data.renderedCallback || noop,
                  args = arguments
          if (parent.oldValue && parent.tagName === "SELECT") { //fix #503
              avalon(parent).val(parent.oldValue.split(","))
          }
          callback.apply(parent, args)
      }
  }
  "with,each".replace(rword, function (name) {
      bindingHandlers[name] = bindingHandlers.repeat
  })
  
  function shimController(data, transation, proxy, fragments) {
      var content = data.template.cloneNode(true)
      var nodes = avalon.slice(content.childNodes)
      content.insertBefore(DOC.createComment(data.signature), content.firstChild)
      transation.appendChild(content)
      var nv = [proxy].concat(data.vmodels)
      var fragment = {
          nodes: nodes,
          vmodels: nv
      }
      fragments.push(fragment)
  }
  
  function getComments(data) {
      var ret = []
      var nodes = data.element.parentNode.childNodes
      for (var i = 0, node; node = nodes[i++]; ) {
          if (node.nodeValue === data.signature) {
              ret.push(node)
          } else if (node.nodeValue === data.signature + ":end") {
              break
          }
      }
      return ret
  }
  
  
  //移除掉start与end之间的节点(保留end)
  function sweepNodes(start, end, callback) {
      while (true) {
          var node = end.previousSibling
          if (!node)
              break
          node.parentNode.removeChild(node)
          callback && callback.call(node)
          if (node === start) {
              break
          }
      }
  }
  
  // 为ms-each,ms-with, ms-repeat会创建一个代理VM，
  // 通过它们保持一个下上文，让用户能调用$index,$first,$last,$remove,$key,$val,$outer等属性与方法
  // 所有代理VM的产生,消费,收集,存放通过xxxProxyFactory,xxxProxyAgent, recycleProxies,xxxProxyPool实现
  var withProxyPool = []
  function withProxyFactory() {
      var proxy = modelFactory({
          $key: "",
          $outer: {},
          $host: {},
          $val: {
              get: function () {
                  return this.$host[this.$key]
              },
              set: function (val) {
                  this.$host[this.$key] = val
              }
          }
      }, {
          $val: 1
      })
      proxy.$id = generateID("$proxy$with")
      return proxy
  }
  
  function withProxyAgent(proxy, key, data) {
      proxy = proxy || withProxyPool.pop()
      if (!proxy) {
          proxy = withProxyFactory()
      } else {
          proxy.$reinitialize()
      }
      var host = data.$repeat
      proxy.$key = key
  
      proxy.$host = host
      proxy.$outer = data.$outer
      if (host.$events) {
          proxy.$events.$val = host.$events[key]
      } else {
          proxy.$events = {}
      }
      return proxy
  }
  
  
  function  recycleProxies(proxies) {
      eachProxyRecycler(proxies)
  }
  function eachProxyRecycler(proxies) {
      proxies.forEach(function (proxy) {
          proxyRecycler(proxy, eachProxyPool)
      })
      proxies.length = 0
  }
  
  
  var eachProxyPool = []
  function eachProxyFactory(name) {
      var source = {
          $host: [],
          $outer: {},
          $index: 0,
          $first: false,
          $last: false,
          $remove: avalon.noop
      }
      source[name] = {
          get: function () {
              var e = this.$events
              var array = e.$index
              e.$index = e[name] //#817 通过$index为el收集依赖
              try {
                  return this.$host[this.$index]
              } finally {
                  e.$index = array
              }
          },
          set: function (val) {
              try {
                  var e = this.$events
                  var array = e.$index
                  e.$index = []
                  this.$host.set(this.$index, val)
              } finally {
                  e.$index = array
              }
          }
      }
      var second = {
          $last: 1,
          $first: 1,
          $index: 1
      }
      var proxy = modelFactory(source, second)
      proxy.$id = generateID("$proxy$each")
      return proxy
  }
  
  function eachProxyAgent(index, data) {
      var param = data.param || "el",
              proxy
      for (var i = 0, n = eachProxyPool.length; i < n; i++) {
          var candidate = eachProxyPool[i]
          if (candidate && candidate.hasOwnProperty(param)) {
              proxy = candidate
              eachProxyPool.splice(i, 1)
          }
      }
      if (!proxy) {
          proxy = eachProxyFactory(param)
      }
      var host = data.$repeat
      var last = host.length - 1
      proxy.$index = index
      proxy.$first = index === 0
      proxy.$last = index === last
      proxy.$host = host
      proxy.$outer = data.$outer
      proxy.$remove = function () {
          return host.removeAt(proxy.$index)
      }
      return proxy
  }
  
  
  function proxyRecycler(proxy, proxyPool) {
      for (var i in proxy.$events) {
          var arr = proxy.$events[i]
          if (Array.isArray(arr)) {
              arr.forEach(function (data) {
                  if (typeof data === "object")
                      disposeData(data)
              })// jshint ignore:line
              arr.length = 0
          }
      }
      proxy.$host = proxy.$outer = {}
      if (proxyPool.unshift(proxy) > kernel.maxRepeatSize) {
          proxyPool.pop()
      }
  }
  
  /*********************************************************************
   *                         各种指令                                  *
   **********************************************************************/
  //ms-skip绑定已经在scanTag 方法中实现
  // bindingHandlers.text 定义在if.js
  bindingExecutors.text = function(val, elem) {
      val = val == null ? "" : val //不在页面上显示undefined null
      if (elem.nodeType === 3) { //绑定在文本节点上
          try { //IE对游离于DOM树外的节点赋值会报错
              elem.data = val
          } catch (e) {}
      } else { //绑定在特性节点上
          if ("textContent" in elem) {
              elem.textContent = val
          } else {
              elem.innerText = val
          }
      }
  }
  function parseDisplay(nodeName, val) {
      //用于取得此类标签的默认display值
      var key = "_" + nodeName
      if (!parseDisplay[key]) {
          var node = DOC.createElement(nodeName)
          root.appendChild(node)
          if (W3C) {
              val = getComputedStyle(node, null).display
          } else {
              val = node.currentStyle.display
          }
          root.removeChild(node)
          parseDisplay[key] = val
      }
      return parseDisplay[key]
  }
  
  avalon.parseDisplay = parseDisplay
  
  bindingHandlers.visible = function (data, vmodels) {
      parseExprProxy(data.value, vmodels, data)
  }
  
  bindingExecutors.visible = function (val, elem, binding) {
      if (val) {
          elem.style.display = binding.display || ""
          if (avalon(elem).css("display") === "none") {
              elem.style.display = binding.display = parseDisplay(elem.nodeName)
          }
      } else {
          elem.style.display = "none"
      }
  }
  bindingHandlers.widget = function(data, vmodels) {
      var args = data.value.match(rword)
      var elem = data.element
      var widget = args[0]
      var id = args[1]
      if (!id || id === "$") { //没有定义或为$时，取组件名+随机数
          id = generateID(widget)
      }
      var optName = args[2] || widget //没有定义，取组件名
      var constructor = avalon.ui[widget]
      if (typeof constructor === "function") { //ms-widget="tabs,tabsAAA,optname"
          vmodels = elem.vmodels || vmodels
          for (var i = 0, v; v = vmodels[i++];) {
              if (v.hasOwnProperty(optName) && typeof v[optName] === "object") {
                  var vmOptions = v[optName]
                  vmOptions = vmOptions.$model || vmOptions
                  break
              }
          }
          if (vmOptions) {
              var wid = vmOptions[widget + "Id"]
              if (typeof wid === "string") {
                  log("warning!不再支持" + widget + "Id")
                  id = wid
              }
          }
          //抽取data-tooltip-text、data-tooltip-attr属性，组成一个配置对象
          var widgetData = avalon.getWidgetData(elem, widget)
          data.value = [widget, id, optName].join(",")
          data[widget + "Id"] = id
          data.evaluator = noop
          elem.msData["ms-widget-id"] = id
          var options = data[widget + "Options"] = avalon.mix({}, constructor.defaults, vmOptions || {}, widgetData)
          elem.removeAttribute("ms-widget")
          var vmodel = constructor(elem, data, vmodels) || {} //防止组件不返回VM
          if (vmodel.$id) {
              avalon.vmodels[id] = vmodel
              createSignalTower(elem, vmodel)
              try {
                  vmodel.$init(function() {
                      avalon.scan(elem, [vmodel].concat(vmodels))
                      if (typeof options.onInit === "function") {
                          options.onInit.call(elem, vmodel, options, vmodels)
                      }
                  })
              } catch (e) {log(e)}
              data.rollback = function() {
                  try {
                      vmodel.$remove()
                      vmodel.widgetElement = null // 放到$remove后边
                  } catch (e) {}
                  elem.msData = {}
                  delete avalon.vmodels[vmodel.$id]
              }
              injectDisposeQueue(data, widgetList)
              if (window.chrome) {
                  elem.addEventListener("DOMNodeRemovedFromDocument", function() {
                      setTimeout(rejectDisposeQueue)
                  })
              }
          } else {
              avalon.scan(elem, vmodels)
          }
      } else if (vmodels.length) { //如果该组件还没有加载，那么保存当前的vmodels
          elem.vmodels = vmodels
      }
  }
  var widgetList = []
  //不存在 bindingExecutors.widget
  /*********************************************************************
   *                             自带过滤器                            *
   **********************************************************************/
  var rscripts = /<script[^>]*>([\S\s]*?)<\/script\s*>/gim
  var ron = /\s+(on[^=\s]+)(?:=("[^"]*"|'[^']*'|[^\s>]+))?/g
  var ropen = /<\w+\b(?:(["'])[^"]*?(\1)|[^>])*>/ig
  var rsanitize = {
      a: /\b(href)\=("javascript[^"]*"|'javascript[^']*')/ig,
      img: /\b(src)\=("javascript[^"]*"|'javascript[^']*')/ig,
      form: /\b(action)\=("javascript[^"]*"|'javascript[^']*')/ig
  }
  var rsurrogate = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g
  var rnoalphanumeric = /([^\#-~| |!])/g;
  
  function numberFormat(number, decimals, point, thousands) {
      //form http://phpjs.org/functions/number_format/
      //number	必需，要格式化的数字
      //decimals	可选，规定多少个小数位。
      //point	可选，规定用作小数点的字符串（默认为 . ）。
      //thousands	可选，规定用作千位分隔符的字符串（默认为 , ），如果设置了该参数，那么所有其他参数都是必需的。
      number = (number + '')
              .replace(/[^0-9+\-Ee.]/g, '')
      var n = !isFinite(+number) ? 0 : +number,
              prec = !isFinite(+decimals) ? 3 : Math.abs(decimals),
              sep = thousands || ",",
              dec = point || ".",
              s = '',
              toFixedFix = function(n, prec) {
                  var k = Math.pow(10, prec)
                  return '' + (Math.round(n * k) / k)
                          .toFixed(prec)
              }
      // Fix for IE parseFloat(0.55).toFixed(0) = 0;
      s = (prec ? toFixedFix(n, prec) : '' + Math.round(n))
              .split('.')
      if (s[0].length > 3) {
          s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep)
      }
      if ((s[1] || '')
              .length < prec) {
          s[1] = s[1] || ''
          s[1] += new Array(prec - s[1].length + 1)
                  .join('0')
      }
      return s.join(dec)
  }
  
  
  var filters = avalon.filters = {
      uppercase: function(str) {
          return str.toUpperCase()
      },
      lowercase: function(str) {
          return str.toLowerCase()
      },
      truncate: function(str, length, truncation) {
          //length，新字符串长度，truncation，新字符串的结尾的字段,返回新字符串
          length = length || 30
          truncation = typeof truncation === "string" ?  truncation : "..." 
          return str.length > length ? str.slice(0, length - truncation.length) + truncation : String(str)
      },
      $filter: function(val) {
          for (var i = 1, n = arguments.length; i < n; i++) {
              var array = arguments[i]
              var fn = avalon.filters[array[0]]
              if (typeof fn === "function") {
                  var arr = [val].concat(array.slice(1))
                  val = fn.apply(null, arr)
              }
          }
          return val
      },
      camelize: camelize,
      //https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet
      //    <a href="javasc&NewLine;ript&colon;alert('XSS')">chrome</a> 
      //    <a href="data:text/html;base64, PGltZyBzcmM9eCBvbmVycm9yPWFsZXJ0KDEpPg==">chrome</a>
      //    <a href="jav	ascript:alert('XSS');">IE67chrome</a>
      //    <a href="jav&#x09;ascript:alert('XSS');">IE67chrome</a>
      //    <a href="jav&#x0A;ascript:alert('XSS');">IE67chrome</a>
      sanitize: function(str) {
          return str.replace(rscripts, "").replace(ropen, function(a, b) {
              var match = a.toLowerCase().match(/<(\w+)\s/)
              if (match) { //处理a标签的href属性，img标签的src属性，form标签的action属性
                  var reg = rsanitize[match[1]]
                  if (reg) {
                      a = a.replace(reg, function(s, name, value) {
                          var quote = value.charAt(0)
                          return name + "=" + quote + "javascript:void(0)" + quote// jshint ignore:line
                      })
                  }
              }
              return a.replace(ron, " ").replace(/\s+/g, " ") //移除onXXX事件
          })
      },
      escape: function(str) {
          //将字符串经过 str 转义得到适合在页面中显示的内容, 例如替换 < 为 &lt 
          return String(str).
                  replace(/&/g, '&amp;').
                  replace(rsurrogate, function(value) {
                      var hi = value.charCodeAt(0)
                      var low = value.charCodeAt(1)
                      return '&#' + (((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000) + ';'
                  }).
                  replace(rnoalphanumeric, function(value) {
                      return '&#' + value.charCodeAt(0) + ';'
                  }).
                  replace(/</g, '&lt;').
                  replace(/>/g, '&gt;')
      },
      currency: function(amount, symbol, fractionSize) {
          return (symbol || "\uFFE5") + numberFormat(amount, isFinite(fractionSize) ? fractionSize : 2)
      },
      number: numberFormat
  }
  /*
   'yyyy': 4 digit representation of year (e.g. AD 1 => 0001, AD 2010 => 2010)
   'yy': 2 digit representation of year, padded (00-99). (e.g. AD 2001 => 01, AD 2010 => 10)
   'y': 1 digit representation of year, e.g. (AD 1 => 1, AD 199 => 199)
   'MMMM': Month in year (January-December)
   'MMM': Month in year (Jan-Dec)
   'MM': Month in year, padded (01-12)
   'M': Month in year (1-12)
   'dd': Day in month, padded (01-31)
   'd': Day in month (1-31)
   'EEEE': Day in Week,(Sunday-Saturday)
   'EEE': Day in Week, (Sun-Sat)
   'HH': Hour in day, padded (00-23)
   'H': Hour in day (0-23)
   'hh': Hour in am/pm, padded (01-12)
   'h': Hour in am/pm, (1-12)
   'mm': Minute in hour, padded (00-59)
   'm': Minute in hour (0-59)
   'ss': Second in minute, padded (00-59)
   's': Second in minute (0-59)
   'a': am/pm marker
   'Z': 4 digit (+sign) representation of the timezone offset (-1200-+1200)
   format string can also be one of the following predefined localizable formats:
   
   'medium': equivalent to 'MMM d, y h:mm:ss a' for en_US locale (e.g. Sep 3, 2010 12:05:08 pm)
   'short': equivalent to 'M/d/yy h:mm a' for en_US locale (e.g. 9/3/10 12:05 pm)
   'fullDate': equivalent to 'EEEE, MMMM d,y' for en_US locale (e.g. Friday, September 3, 2010)
   'longDate': equivalent to 'MMMM d, y' for en_US locale (e.g. September 3, 2010
   'mediumDate': equivalent to 'MMM d, y' for en_US locale (e.g. Sep 3, 2010)
   'shortDate': equivalent to 'M/d/yy' for en_US locale (e.g. 9/3/10)
   'mediumTime': equivalent to 'h:mm:ss a' for en_US locale (e.g. 12:05:08 pm)
   'shortTime': equivalent to 'h:mm a' for en_US locale (e.g. 12:05 pm)
   */
  new function() {// jshint ignore:line
      function toInt(str) {
          return parseInt(str, 10) || 0
      }
  
      function padNumber(num, digits, trim) {
          var neg = ""
          if (num < 0) {
              neg = '-'
              num = -num
          }
          num = "" + num
          while (num.length < digits)
              num = "0" + num
          if (trim)
              num = num.substr(num.length - digits)
          return neg + num
      }
  
      function dateGetter(name, size, offset, trim) {
          return function(date) {
              var value = date["get" + name]()
              if (offset > 0 || value > -offset)
                  value += offset
              if (value === 0 && offset === -12) {
                  value = 12
              }
              return padNumber(value, size, trim)
          }
      }
  
      function dateStrGetter(name, shortForm) {
          return function(date, formats) {
              var value = date["get" + name]()
              var get = (shortForm ? ("SHORT" + name) : name).toUpperCase()
              return formats[get][value]
          }
      }
  
      function timeZoneGetter(date) {
          var zone = -1 * date.getTimezoneOffset()
          var paddedZone = (zone >= 0) ? "+" : ""
          paddedZone += padNumber(Math[zone > 0 ? "floor" : "ceil"](zone / 60), 2) + padNumber(Math.abs(zone % 60), 2)
          return paddedZone
      }
      //取得上午下午
  
      function ampmGetter(date, formats) {
          return date.getHours() < 12 ? formats.AMPMS[0] : formats.AMPMS[1]
      }
      var DATE_FORMATS = {
          yyyy: dateGetter("FullYear", 4),
          yy: dateGetter("FullYear", 2, 0, true),
          y: dateGetter("FullYear", 1),
          MMMM: dateStrGetter("Month"),
          MMM: dateStrGetter("Month", true),
          MM: dateGetter("Month", 2, 1),
          M: dateGetter("Month", 1, 1),
          dd: dateGetter("Date", 2),
          d: dateGetter("Date", 1),
          HH: dateGetter("Hours", 2),
          H: dateGetter("Hours", 1),
          hh: dateGetter("Hours", 2, -12),
          h: dateGetter("Hours", 1, -12),
          mm: dateGetter("Minutes", 2),
          m: dateGetter("Minutes", 1),
          ss: dateGetter("Seconds", 2),
          s: dateGetter("Seconds", 1),
          sss: dateGetter("Milliseconds", 3),
          EEEE: dateStrGetter("Day"),
          EEE: dateStrGetter("Day", true),
          a: ampmGetter,
          Z: timeZoneGetter
      }
      var rdateFormat = /((?:[^yMdHhmsaZE']+)|(?:'(?:[^']|'')*')|(?:E+|y+|M+|d+|H+|h+|m+|s+|a|Z))(.*)/
      var raspnetjson = /^\/Date\((\d+)\)\/$/
      filters.date = function(date, format) {
          var locate = filters.date.locate,
                  text = "",
                  parts = [],
                  fn, match
          format = format || "mediumDate"
          format = locate[format] || format
          if (typeof date === "string") {
              if (/^\d+$/.test(date)) {
                  date = toInt(date)
              } else if (raspnetjson.test(date)) {
                  date = +RegExp.$1
              } else {
                  var trimDate = date.trim()
                  var dateArray = [0, 0, 0, 0, 0, 0, 0]
                  var oDate = new Date(0)
                  //取得年月日
                  trimDate = trimDate.replace(/^(\d+)\D(\d+)\D(\d+)/, function(_, a, b, c) {
                      var array = c.length === 4 ? [c, a, b] : [a, b, c]
                      dateArray[0] = toInt(array[0])     //年
                      dateArray[1] = toInt(array[1]) - 1 //月
                      dateArray[2] = toInt(array[2])     //日
                      return ""
                  })
                  var dateSetter = oDate.setFullYear
                  var timeSetter = oDate.setHours
                  trimDate = trimDate.replace(/[T\s](\d+):(\d+):?(\d+)?\.?(\d)?/, function(_, a, b, c, d) {
                      dateArray[3] = toInt(a) //小时
                      dateArray[4] = toInt(b) //分钟
                      dateArray[5] = toInt(c) //秒
                      if (d) {                //毫秒
                          dateArray[6] = Math.round(parseFloat("0." + d) * 1000)
                      }
                      return ""
                  })
                  var tzHour = 0
                  var tzMin = 0
                  trimDate = trimDate.replace(/Z|([+-])(\d\d):?(\d\d)/, function(z, symbol, c, d) {
                      dateSetter = oDate.setUTCFullYear
                      timeSetter = oDate.setUTCHours
                      if (symbol) {
                          tzHour = toInt(symbol + c)
                          tzMin = toInt(symbol + d)
                      }
                      return ""
                  })
  
                  dateArray[3] -= tzHour
                  dateArray[4] -= tzMin
                  dateSetter.apply(oDate, dateArray.slice(0, 3))
                  timeSetter.apply(oDate, dateArray.slice(3))
                  date = oDate
              }
          }
          if (typeof date === "number") {
              date = new Date(date)
          }
          if (avalon.type(date) !== "date") {
              return
          }
          while (format) {
              match = rdateFormat.exec(format)
              if (match) {
                  parts = parts.concat(match.slice(1))
                  format = parts.pop()
              } else {
                  parts.push(format)
                  format = null
              }
          }
          parts.forEach(function(value) {
              fn = DATE_FORMATS[value]
              text += fn ? fn(date, locate) : value.replace(/(^'|'$)/g, "").replace(/''/g, "'")
          })
          return text
      }
      var locate = {
          AMPMS: {
              0: "上午",
              1: "下午"
          },
          DAY: {
              0: "星期日",
              1: "星期一",
              2: "星期二",
              3: "星期三",
              4: "星期四",
              5: "星期五",
              6: "星期六"
          },
          MONTH: {
              0: "1月",
              1: "2月",
              2: "3月",
              3: "4月",
              4: "5月",
              5: "6月",
              6: "7月",
              7: "8月",
              8: "9月",
              9: "10月",
              10: "11月",
              11: "12月"
          },
          SHORTDAY: {
              "0": "周日",
              "1": "周一",
              "2": "周二",
              "3": "周三",
              "4": "周四",
              "5": "周五",
              "6": "周六"
          },
          fullDate: "y年M月d日EEEE",
          longDate: "y年M月d日",
          medium: "yyyy-M-d H:mm:ss",
          mediumDate: "yyyy-M-d",
          mediumTime: "H:mm:ss",
          "short": "yy-M-d ah:mm",
          shortDate: "yy-M-d",
          shortTime: "ah:mm"
      }
      locate.SHORTMONTH = locate.MONTH
      filters.date.locate = locate
  }// jshint ignore:line
  /*********************************************************************
   *                      AMD加载器                                   *
   **********************************************************************/
  //https://www.devbridge.com/articles/understanding-amd-requirejs/
  //http://maxogden.com/nested-dependencies.html
  var modules = avalon.modules = {
      "domReady!": {
          exports: avalon,
          state: 3
      },
      "avalon": {
          exports: avalon,
          state: 4
      }
  }
  
  var otherRequire = window.require
  var otherDefine = window.define
  var innerRequire
  
  plugins.loader = function (builtin) {
      var flag = innerRequire && builtin
      window.require = flag ? innerRequire : otherRequire
      window.define = flag ? innerRequire.define : otherDefine
  }
  //Object(modules[id]).state拥有如下值 
  // undefined  没有定义
  // 1(send)    已经发出请求
  // 2(loading) 已经被执行但还没有执行完成，在这个阶段define方法会被执行
  // 3(loaded)  执行完毕，通过onload/onreadystatechange回调判定，在这个阶段checkDeps方法会执行
  // 4(execute)  其依赖也执行完毕, 值放到exports对象上，在这个阶段fireFactory方法会执行
  modules.exports = modules.avalon
  
  new function () {// jshint ignore:line
      var loadings = [] //正在加载中的模块列表
      var factorys = [] //放置define方法的factory函数
      var rjsext = /\.js$/i
      function makeRequest(name, config) {
  //1. 去掉资源前缀
          var res = "js"
          name = name.replace(/^(\w+)\!/, function (a, b) {
              res = b
              return ""
          })
          if (res === "ready") {
              log("debug: ready!已经被废弃，请使用domReady!")
              res = "domReady"
          }
  //2. 去掉querystring, hash
          var query = ""
          name = name.replace(rquery, function (a) {
              query = a
              return ""
          })
          //3. 去掉扩展名
          var suffix = "." + res
          var ext = /js|css/.test(suffix) ? suffix : ""
          name = name.replace(/\.[a-z0-9]+$/g, function (a) {
              if (a === suffix) {
                  ext = a
                  return ""
              } else {
                  return a
              }
          })
          var req = avalon.mix({
              query: query,
              ext: ext,
              res: res,
              name: name,
              toUrl: toUrl
          }, config)
          req.toUrl(name)
          return req
      }
  
      function fireRequest(req) {
          var name = req.name
          var res = req.res
          //1. 如果该模块已经发出请求，直接返回
          var module = modules[name]
          var urlNoQuery = name && req.urlNoQuery
          if (module && module.state >= 1) {
              return name
          }
          module = modules[urlNoQuery]
          if (module && module.state >= 3) {
              innerRequire(module.deps || [], module.factory, urlNoQuery)
              return urlNoQuery
          }
          if (name && !module) {
              module = modules[urlNoQuery] = {
                  id: urlNoQuery,
                  state: 1 //send
              }
              var wrap = function (obj) {
                  resources[res] = obj
                  obj.load(name, req, function (a) {
                      if (arguments.length && a !== void 0) {
                          module.exports = a
                      }
                      module.state = 4
                      checkDeps()
                  })
              }
  
              if (!resources[res]) {
                  innerRequire([res], wrap)
              } else {
                  wrap(resources[res])
              }
          }
          return name ? urlNoQuery : res + "!"
      }
  
  //核心API之一 require
      var requireQueue = []
      var isUserFirstRequire = false
      innerRequire = avalon.require = function (array, factory, parentUrl, defineConfig) {
          if (!isUserFirstRequire) {
              requireQueue.push(avalon.slice(arguments))
              if (arguments.length <= 2) {
                  isUserFirstRequire = true
                  var queue = requireQueue.splice(0, requireQueue.length), args
                  while (args = queue.shift()) {
                      innerRequire.apply(null, args)
                  }
              }
              return
          }
  
          if (!Array.isArray(array)) {
              avalon.error("require方法的第一个参数应为数组 " + array)
          }
          var deps = [] // 放置所有依赖项的完整路径
          var uniq = {}
          var id = parentUrl || "callback" + setTimeout("1")// jshint ignore:line
          defineConfig = defineConfig || {}
          defineConfig.baseUrl = kernel.baseUrl
          var isBuilt = !!defineConfig.built
          if (parentUrl) {
              defineConfig.parentUrl = parentUrl.substr(0, parentUrl.lastIndexOf("/"))
              defineConfig.mapUrl = parentUrl.replace(rjsext, "")
          }
          if (isBuilt) {
              var req = makeRequest(defineConfig.defineName, defineConfig)
              id = req.urlNoQuery
          } else {
              array.forEach(function (name) {
                  var req = makeRequest(name, defineConfig)
                  var url = fireRequest(req) //加载资源，并返回该资源的完整地址
                  if (url) {
                      if (!uniq[url]) {
                          deps.push(url)
                          uniq[url] = "司徒正美" //去重
                      }
                  }
              })
          }
  
          var module = modules[id]
          if (!module || module.state !== 4) {
              modules[id] = {
                  id: id,
                  deps: isBuilt ? array.concat() : deps,
                  factory: factory || noop,
                  state: 3
              }
          }
          if (!module) {
              //如果此模块是定义在另一个JS文件中, 那必须等该文件加载完毕, 才能放到检测列队中
              loadings.push(id)
          }
          checkDeps()
      }
  
  //核心API之二 require
      innerRequire.define = function (name, deps, factory) { //模块名,依赖列表,模块本身
          if (typeof name !== "string") {
              factory = deps
              deps = name
              name = "anonymous"
          }
          if (!Array.isArray(deps)) {
              factory = deps
              deps = []
          }
          var config = {
              built: !isUserFirstRequire, //用r.js打包后,所有define会放到requirejs之前
              defineName: name
          }
          var args = [deps, factory, config]
          factory.require = function (url) {
              args.splice(2, 0, url)
              if (modules[url]) {
                  modules[url].state = 3 //loaded
                  var isCycle = false
                  try {
                      isCycle = checkCycle(modules[url].deps, url)
                  } catch (e) {
                  }
                  if (isCycle) {
                      avalon.error(url + "模块与之前的模块存在循环依赖，请不要直接用script标签引入" + url + "模块")
                  }
              }
              delete factory.require //释放内存
              innerRequire.apply(null, args) //0,1,2 --> 1,2,0
          }
  //根据标准,所有遵循W3C标准的浏览器,script标签会按标签的出现顺序执行。
  //老的浏览器中，加载也是按顺序的：一个文件下载完成后，才开始下载下一个文件。
  //较新的浏览器中（IE8+ 、FireFox3.5+ 、Chrome4+ 、Safari4+），为了减小请求时间以优化体验，
  //下载可以是并行的，但是执行顺序还是按照标签出现的顺序。
  //但如果script标签是动态插入的, 就未必按照先请求先执行的原则了,目测只有firefox遵守
  //唯一比较一致的是,IE10+及其他标准浏览器,一旦开始解析脚本, 就会一直堵在那里,直接脚本解析完毕
  //亦即，先进入loading阶段的script标签(模块)必然会先进入loaded阶段
          var url = config.built ? "unknown" : getCurrentScript()
          if (url) {
              var module = modules[url]
              if (module) {
                  module.state = 2
              }
              factory.require(url)
          } else {//合并前后的safari，合并后的IE6-9走此分支
              factorys.push(factory)
          }
      }
  //核心API之三 require.config(settings)
      innerRequire.config = kernel
      //核心API之四 define.amd 标识其符合AMD规范
      innerRequire.define.amd = modules
  
      //==========================对用户配置项进行再加工==========================
      var allpaths = kernel["orig.paths"] = {}
      var allmaps = kernel["orig.map"] = {}
      var allpackages = kernel["packages"] = []
      var allargs = kernel["orig.args"] = {}
      avalon.mix(plugins, {
          paths: function (hash) {
              avalon.mix(allpaths, hash)
              kernel.paths = makeIndexArray(allpaths)
          },
          map: function (hash) {
              avalon.mix(allmaps, hash)
              var list = makeIndexArray(allmaps, 1, 1)
              avalon.each(list, function (_, item) {
                  item.val = makeIndexArray(item.val)
              })
              kernel.map = list
          },
          packages: function (array) {
              array = array.concat(allpackages)
              var uniq = {}
              var ret = []
              for (var i = 0, pkg; pkg = array[i++]; ) {
                  pkg = typeof pkg === "string" ? {name: pkg} : pkg
                  var name = pkg.name
                  if (!uniq[name]) {
                      var url = joinPath(pkg.location || name, pkg.main || "main")
                      url = url.replace(rjsext, "")
                      ret.push(pkg)
                      uniq[name] = pkg.location = url
                      pkg.reg = makeMatcher(name)
                  }
              }
              kernel.packages = ret.sort()
          },
          urlArgs: function (hash) {
              if (typeof hash === "string") {
                  hash = {"*": hash}
              }
              avalon.mix(allargs, hash)
              kernel.urlArgs = makeIndexArray(allargs, 1)
          },
          baseUrl: function (url) {
              if (!isAbsUrl(url)) {
                  var baseElement = head.getElementsByTagName("base")[0]
                  if (baseElement) {
                      head.removeChild(baseElement)
                  }
                  var node = DOC.createElement("a")
                  node.href = url
                  url = getFullUrl(node, "href")
                  if (baseElement) {
                      head.insertBefore(baseElement, head.firstChild)
                  }
              }
              if (url.length > 3)
                  kernel.baseUrl = url
          },
          shim: function (obj) {
              for (var i in obj) {
                  var value = obj[i]
                  if (Array.isArray(value)) {
                      value = obj[i] = {
                          deps: value
                      }
                  }
                  if (!value.exportsFn && (value.exports || value.init)) {
                      value.exportsFn = makeExports(value)
                  }
              }
              kernel.shim = obj
          }
  
      })
  
  
      //==============================内部方法=================================
      function checkCycle(deps, nick) {
          //检测是否存在循环依赖
          for (var i = 0, id; id = deps[i++]; ) {
              if (modules[id].state !== 4 &&
                      (id === nick || checkCycle(modules[id].deps, nick))) {
                  return true
              }
          }
      }
  
      function checkFail(node, onError, fuckIE) {
          var id = trimQuery(node.src) //检测是否死链
          node.onload = node.onreadystatechange = node.onerror = null
          if (onError || (fuckIE && modules[id] && !modules[id].state)) {
              setTimeout(function () {
                  head.removeChild(node)
                  node = null // 处理旧式IE下的循环引用问题
              })
              log("debug: 加载 " + id + " 失败" + onError + " " + (!modules[id].state))
          } else {
              return true
          }
      }
  
      function checkDeps() {
          //检测此JS模块的依赖是否都已安装完毕,是则安装自身
          loop: for (var i = loadings.length, id; id = loadings[--i]; ) {
              var obj = modules[id],
                      deps = obj.deps
              if (!deps)
                  continue
              for (var j = 0, key; key = deps[j]; j++) {
                  if (Object(modules[key]).state !== 4) {
                      continue loop
                  }
              }
              //如果deps是空对象或者其依赖的模块的状态都是2
              if (obj.state !== 4) {
                  loadings.splice(i, 1) //必须先移除再安装，防止在IE下DOM树建完后手动刷新页面，会多次执行它
                  fireFactory(obj.id, obj.deps, obj.factory)
                  checkDeps() //如果成功,则再执行一次,以防有些模块就差本模块没有安装好
              }
          }
      }
  
      var rreadyState = /complete|loaded/
      function loadJS(url, id, callback) {
          //通过script节点加载目标模块
          var node = DOC.createElement("script")
          node.className = subscribers //让getCurrentScript只处理类名为subscribers的script节点
          var supportLoad = "onload" in node
          var onEvent = supportLoad ? "onload" : "onreadystatechange"
          function onload() {
              var factory = factorys.pop()
              factory && factory.require(id)
              if (callback) {
                  callback()
              }
              if (checkFail(node, false, !supportLoad)) {
                  log("debug: 已成功加载 " + url)
                  id && loadings.push(id)
                  checkDeps()
              }
          }
          var index = 0, loadID
          node[onEvent] = supportLoad ? onload : function () {
              if (rreadyState.test(node.readyState)) {
                  ++index
                  if (index === 1) {
                      loadID = setTimeout(onload, 500)
                  } else {
                      clearTimeout(loadID)
                      onload()
                  }
              }
          }
          node.onerror = function () {
              checkFail(node, true)
          }
  
          head.insertBefore(node, head.firstChild) //chrome下第二个参数不能为null
          node.src = url //插入到head的第一个节点前，防止IE6下head标签没闭合前使用appendChild抛错
          log("debug: 正准备加载 " + url) //更重要的是IE6下可以收窄getCurrentScript的寻找范围
      }
  
      var resources = innerRequire.plugins = {
          //三大常用资源插件 js!, css!, text!, ready!
          ready: {
              load: noop
          },
          js: {
              load: function (name, req, onLoad) {
                  var url = req.url
                  var id = req.urlNoQuery
                  var shim = kernel.shim[name.replace(rjsext, "")]
                  if (shim) { //shim机制
                      innerRequire(shim.deps || [], function () {
                          var args = avalon.slice(arguments)
                          loadJS(url, id, function () {
                              onLoad(shim.exportsFn ? shim.exportsFn.apply(0, args) : void 0)
                          })
                      })
                  } else {
                      loadJS(url, id)
                  }
              }
          },
          css: {
              load: function (name, req, onLoad) {
                  var url = req.url
                  var node = DOC.createElement("link")
                  node.rel = "stylesheet"
                  node.href = url
                  head.insertBefore(node, head.firstChild)
                  log("debug: 已成功加载 " + url)
                  onLoad()
              }
          },
          text: {
              load: function (name, req, onLoad) {
                  var url = req.url
                  var xhr = getXHR()
                  xhr.onreadystatechange = function () {
                      if (xhr.readyState === 4) {
                          var status = xhr.status;
                          if (status > 399 && status < 600) {
                              avalon.error(url + " 对应资源不存在或没有开启 CORS")
                          } else {
                              log("debug: 已成功加载 " + url)
                              onLoad(xhr.responseText)
                          }
                      }
                  }
                  var time = "_=" + (new Date() - 0)
                  var _url = url.indexOf("?") === -1 ? url + "?" + time : url + "&" + time
                  xhr.open("GET", _url, true)
                  if ("withCredentials" in xhr) {//这是处理跨域
                      xhr.withCredentials = true
                  }
                  xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest")//告诉后端这是AJAX请求
                  xhr.send()
                  log("debug: 正准备加载 " + url)
              }
          }
      }
      innerRequire.checkDeps = checkDeps
  
      var rquery = /(\?[^#]*)$/
      function trimQuery(url) {
          return (url || "").replace(rquery, "")
      }
  
      function isAbsUrl(path) {
          //http://stackoverflow.com/questions/10687099/how-to-test-if-a-url-string-is-absolute-or-relative
          return  /^(?:[a-z]+:)?\/\//i.test(String(path))
      }
  
      function getFullUrl(node, src) {
          return"1"[0] ? node[src] : node.getAttribute(src, 4)
      }
  
      function getCurrentScript() {
          // inspireb by https://github.com/samyk/jiagra/blob/master/jiagra.js
          var stack
          try {
              a.b.c() //强制报错,以便捕获e.stack
          } catch (e) { //safari5的sourceURL，firefox的fileName，它们的效果与e.stack不一样
              stack = e.stack
              if (!stack && window.opera) {
                  //opera 9没有e.stack,但有e.Backtrace,但不能直接取得,需要对e对象转字符串进行抽取
                  stack = (String(e).match(/of linked script \S+/g) || []).join(" ")
              }
          }
          if (stack) {
              /**e.stack最后一行在所有支持的浏览器大致如下:
               *chrome23:
               * at http://113.93.50.63/data.js:4:1
               *firefox17:
               *@http://113.93.50.63/query.js:4
               *opera12:http://www.oldapps.com/opera.php?system=Windows_XP
               *@http://113.93.50.63/data.js:4
               *IE10:
               *  at Global code (http://113.93.50.63/data.js:4:1)
               *  //firefox4+ 可以用document.currentScript
               */
              stack = stack.split(/[@ ]/g).pop() //取得最后一行,最后一个空格或@之后的部分
              stack = stack[0] === "(" ? stack.slice(1, -1) : stack.replace(/\s/, "") //去掉换行符
              return trimQuery(stack.replace(/(:\d+)?:\d+$/i, "")) //去掉行号与或许存在的出错字符起始位置
          }
          var nodes = head.getElementsByTagName("script") //只在head标签中寻找
          for (var i = nodes.length, node; node = nodes[--i]; ) {
              if (node.className === subscribers && node.readyState === "interactive") {
                  var url = getFullUrl(node, "src")
                  return node.className = trimQuery(url)
              }
          }
      }
  
      var rcallback = /^callback\d+$/
      function fireFactory(id, deps, factory) {
          var module = Object(modules[id])
          module.state = 4
          for (var i = 0, array = [], d; d = deps[i++]; ) {
              if (d === "exports") {
                  var obj = module.exports || (module.exports = {})
                  array.push(obj)
              } else {
                  array.push(modules[d].exports)
              }
          }
          try {
              var ret = factory.apply(window, array)
          } catch (e) {
              log("执行[" + id + "]模块的factory抛错： ", e)
          }
          if (ret !== void 0) {
              module.exports = ret
          }
          if (rcallback.test(id)) {
              delete modules[id]
          }
          delete module.factory
          return ret
      }
      function toUrl(id) {
          if (id.indexOf(this.res + "!") === 0) {
              id = id.slice(this.res.length + 1) //处理define("css!style",[], function(){})的情况
          }
          var url = id
          //1. 是否命中paths配置项
          var usePath = 0
          var baseUrl = this.baseUrl
          var rootUrl = this.parentUrl || baseUrl
          eachIndexArray(id, kernel.paths, function (value, key) {
              url = url.replace(key, value)
              usePath = 1
          })
          //2. 是否命中packages配置项
          if (!usePath) {
              eachIndexArray(id, kernel.packages, function (value, key, item) {
                  url = url.replace(item.name, item.location)
              })
          }
          //3. 是否命中map配置项
          if (this.mapUrl) {
              eachIndexArray(this.mapUrl, kernel.map, function (array) {
                  eachIndexArray(url, array, function (mdValue, mdKey) {
                      url = url.replace(mdKey, mdValue)
                      rootUrl = baseUrl
                  })
              })
          }
          var ext = this.ext
          if (ext && usePath && url.slice(-ext.length) === ext) {
              url = url.slice(0, -ext.length)
          }
          //4. 转换为绝对路径
          if (!isAbsUrl(url)) {
              rootUrl = this.built || /^\w/.test(url) ? baseUrl : rootUrl
              url = joinPath(rootUrl, url)
          }
          //5. 还原扩展名，query
          var urlNoQuery = url + ext
          url = urlNoQuery + this.query
          urlNoQuery = url.replace(rquery, function (a) {
              this.query = a
              return ""
          })
          //6. 处理urlArgs
          eachIndexArray(id, kernel.urlArgs, function (value) {
              url += (url.indexOf("?") === -1 ? "?" : "&") + value;
          })
          this.url = url
          return  this.urlNoQuery = urlNoQuery
      }
  
      function makeIndexArray(hash, useStar, part) {
          //创建一个经过特殊算法排好序的数组
          var index = hash2array(hash, useStar, part)
          index.sort(descSorterByName)
          return index
      }
  
      function makeMatcher(prefix) {
          return new RegExp('^' + prefix + '(/|$)')
      }
  
      function makeExports(value) {
          return function () {
              var ret
              if (value.init) {
                  ret = value.init.apply(window, arguments)
              }
              return ret || (value.exports && getGlobal(value.exports))
          }
      }
  
  
      function hash2array(hash, useStar, part) {
          var array = [];
          for (var key in hash) {
              if (ohasOwn.call(hash, key)) {
                  var item = {
                      name: key,
                      val: hash[key]
                  }
                  array.push(item)
                  item.reg = key === "*" && useStar ? /^/ : makeMatcher(key)
                  if (part && key !== "*") {
                      item.reg = new RegExp('\/' + key.replace(/^\//, "") + '(/|$)')
                  }
              }
          }
          return array
      }
  
      function eachIndexArray(moduleID, array, matcher) {
          array = array || []
          for (var i = 0, el; el = array[i++]; ) {
              if (el.reg.test(moduleID)) {
                  matcher(el.val, el.name, el)
                  return false
              }
          }
      }
      // 根据元素的name项进行数组字符数逆序的排序函数
      function descSorterByName(a, b) {
          var aaa = a.name
          var bbb = b.name
          if (bbb === "*") {
              return -1
          }
          if (aaa === "*") {
              return 1
          }
          return bbb.length - aaa.length
      }
  
      var rdeuce = /\/\w+\/\.\./
      function joinPath(a, b) {
          if (a.charAt(a.length - 1) !== "/") {
              a += "/"
          }
          if (b.slice(0, 2) === "./") { //相对于兄弟路径
              return a + b.slice(2)
          }
          if (b.slice(0, 2) === "..") { //相对于父路径
              a += b
              while (rdeuce.test(a)) {
                  a = a.replace(rdeuce, "")
              }
              return a
          }
          if (b.slice(0, 1) === "/") {
              return a + b.slice(1)
          }
          return a + b
      }
  
      function getGlobal(value) {
          if (!value) {
              return value
          }
          var g = window
          value.split(".").forEach(function (part) {
              g = g[part]
          })
          return g
      }
  
      var mainNode = DOC.scripts[DOC.scripts.length - 1]
      var dataMain = mainNode.getAttribute("data-main")
      if (dataMain) {
          plugins.baseUrl(dataMain)
          var href = kernel.baseUrl
          kernel.baseUrl = href.slice(0, href.lastIndexOf("/") + 1)
          loadJS(href.replace(rjsext, "") + ".js")
      } else {
          var loaderUrl = trimQuery(getFullUrl(mainNode, "src"))
          kernel.baseUrl = loaderUrl.slice(0, loaderUrl.lastIndexOf("/") + 1)
      }
  }// jshint ignore:line
  
  /*********************************************************************
   *                           DOMReady                               *
   **********************************************************************/
  
  var readyList = [], isReady
  var fireReady = function(fn) {
      isReady = true
      var require = avalon.require
      if (require && require.checkDeps) {
          modules["domReady!"].state = 4
          require.checkDeps()
      }
      while(fn = readyList.shift()){
          fn(avalon)
      }
  }
  
  function doScrollCheck() {
      try { //IE下通过doScrollCheck检测DOM树是否建完
          root.doScroll("left")
          fireReady()
      } catch (e) {
          setTimeout(doScrollCheck)
      }
  }
  
  if (DOC.readyState === "complete") {
      setTimeout(fireReady) //如果在domReady之外加载
  } else if (W3C) {
      DOC.addEventListener("DOMContentLoaded", fireReady)
  } else {
      DOC.attachEvent("onreadystatechange", function() {
          if (DOC.readyState === "complete") {
              fireReady()
          }
      })
      try {
          var isTop = window.frameElement === null
      } catch (e) {
      }
      if (root.doScroll && isTop && window.external) {//fix IE iframe BUG
          doScrollCheck()
      }
  }
  avalon.bind(window, "load", fireReady)
  
  avalon.ready = function(fn) {
      if (!isReady) {
          readyList.push(fn)
      } else {
          fn(avalon)
      }
  }
  
  avalon.config({
      loader: true
  })
  
  avalon.ready(function() {
      avalon.scan(DOC.body)
  })
  
  // Register as a named AMD module, since avalon can be concatenated with other
  // files that may use define, but not via a proper concatenation script that
  // understands anonymous AMD modules. A named AMD is safest and most robust
  // way to register. Lowercase avalon is used because AMD module names are
  // derived from file names, and Avalon is normally delivered in a lowercase
  // file name. Do this after creating the global so that if an AMD module wants
  // to call noConflict to hide this version of avalon, it will work.
  
  // Note that for maximum portability, libraries that are not avalon should
  // declare themselves as anonymous modules, and avoid setting a global if an
  // AMD loader is present. avalon is a special case. For more information, see
  // https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon
      if (typeof define === "function" && define.amd) {
          define("avalon", [], function() {
              return avalon
          })
      }
  // Map over avalon in case of overwrite
      var _avalon = window.avalon
      avalon.noConflict = function(deep) {
          if (deep && window.avalon === avalon) {
              window.avalon = _avalon
          }
          return avalon
      }
  // Expose avalon identifiers, even in AMD
  // and CommonJS for browser emulators
      if (noGlobal === void 0) {
          window.avalon = avalon
      }
      
      return avalon
  
  }));