text: (window.webpackJsonp=window.webpackJsonp||[]).push([[51],{561:function(s,t,a){"use strict";a.r(t);var r=a(3),e=Object(r.a)({},(function(){var s=this,t=s.$createElement,a=s._self._c||t;return a("ContentSlotsDistributor",{attrs:{"slot-key":s.$parent.slotKey}},[a("div",{staticClass:"language-js line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-js"}},[a("code",[a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// ajax是什么")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1.")]),s._v(" ajax是一种在无需要重新加载整个网页的情况下"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("能够更新部分网页的技术\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token 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number"}},[s._v("1.")]),s._v(" json全称是js对象表示法"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("它是一种数据交换的文本格式\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2.")]),s._v(" 不是一种编程语言"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("用于读取结构化数据"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("目的是取代繁琐的xml\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 支持语法")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1.")]),s._v(" 简单值"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v(":")]),s._v(" 字符串、数值、布尔值、"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("null")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("字符串以双引号表示"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("数值以十进制表示\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2.")]),s._v(" 对象\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("3.")]),s._v(" 数组\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("4.")]),s._v(" 不支持undefiend\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 方法")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[s._v("JSON")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("parse")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("参数"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 用于将JSON字符串转化成对象")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token constant"}},[s._v("JSON")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("stringify")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("参数"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 用于将对象转化成JSON字符串")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// ajax演示")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("var")]),s._v(" request "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("new")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("XMLHttpRequest")]),s._v("\nrequest"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("open")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v("'post'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" url"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token boolean"}},[s._v("true")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 创建请求,true为异步")]),s._v("\nrequest"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("setRequestHeader")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v("'content-type'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token string"}},[s._v("'application/json'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// post请求要写请求头")]),s._v("\nrequest"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("send")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[s._v("'name=cj&age=23'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 发送请求")]),s._v("\nrequest"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function-variable function"}},[s._v("onreadystatechange")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("function")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n  "),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("if")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("request"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("readystate "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("===")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("4")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("&&")]),s._v(" request"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("status "),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("===")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("200")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v("\n    console"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("log")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token constant"}},[s._v("JSON")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("parse")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("request"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("responeText"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// request的属性")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1.")]),s._v(" request"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("responseText "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 获取字符串形式的响应数据")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2.")]),s._v(" request"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("responseXml "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 获取xml形式的响应数据")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("3.")]),s._v(" request"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("status "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 数字,状态码")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("4.")]),s._v(" request"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("statusText "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 文本,状态码")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("5.")]),s._v(" request"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("getAllResponseHeader")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 获取所有的响应报头")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("6.")]),s._v(" request"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("getResponseHeader")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 获取某个的响应报头")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// request.readystate")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("0")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("未初始化"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("还没有调用send")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("方法\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("载入"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("已调用send")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("方法"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("正在发送请求\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("3.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("载入完成"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("send")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("方法执行完成"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("已经接收全部响应内容\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("4.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("交互"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("正在解析响应内容\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("5.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("4")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("完成"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("响应内容解析完成"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("可以在客户端调用\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// request.status")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("1")]),s._v("xx"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v(":")]),s._v(" 服务器收到请求\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2")]),s._v("xx"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v(":")]),s._v(" 表示成功处理请求"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("如"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("200")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("3.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("3")]),s._v("xx"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v(":")]),s._v(" 需要重定向"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v("浏览器直接跳转"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("301")]),s._v("表示永久重定向"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("302")]),s._v("表示临时重定向"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("304")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("表示资源未改变")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),s._v("缓存"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("4.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("4")]),s._v("xx"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v(":")]),s._v(" 客户端请求错误"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("404")]),s._v("表示资源找不到"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("403")]),s._v("表示没有权限\n"),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("5.")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("5")]),s._v("xx"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v(":")]),s._v(" 服务器端错误"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("504")]),s._v("表示网关超时"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("500")]),s._v("表示服务器错误\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("--")]),a("span",{pre:!0,attrs:{class:"token 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