text: 
  /**
   * Parse the time to string
   * @param {(Object|string|number)} time
   * @param {string} cFormat
   * @returns {string | null}
   */
  export function parseTime(time, cFormat) {
    if (arguments.length === 0 || !time) {
      return null
    }
    const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
    let date
    if (typeof time === 'object') {
      date = time
    } else {
      if ((typeof time === 'string')) {
        if ((/^[0-9]+$/.test(time))) {
          // support "1548221490638"
          time = parseInt(time)
        } else {
          // support safari
          // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
          time = time.replace(new RegExp(/-/gm), '/')
        }
      }
  
      if ((typeof time === 'number') && (time.toString().length === 10)) {
        time = time * 1000
      }
      date = new Date(time)
    }
    const formatObj = {
      y: date.getFullYear(),
      m: date.getMonth() + 1,
      d: date.getDate(),
      h: date.getHours(),
      i: date.getMinutes(),
      s: date.getSeconds(),
      a: date.getDay()
    }
    const time_str = format.replace(/{([ymdhisa])+}/g, (result, key) => {
      const value = formatObj[key]
      // Note: getDay() returns 0 on Sunday
      if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value ] }
      return value.toString().padStart(2, '0')
    })
    return time_str
  }
  
  /**
   * @param {number} time
   * @param {string} option
   * @returns {string}
   */
  export function formatTime(time, option) {
    if (('' + time).length === 10) {
      time = parseInt(time) * 1000
    } else {
      time = +time
    }
    const d = new Date(time)
    const now = Date.now()
  
    const diff = (now - d) / 1000
  
    if (diff < 30) {
      return '刚刚'
    } else if (diff < 3600) {
      // less 1 hour
      return Math.ceil(diff / 60) + '分钟前'
    } else if (diff < 3600 * 24) {
      return Math.ceil(diff / 3600) + '小时前'
    } else if (diff < 3600 * 24 * 2) {
      return '1天前'
    }
    if (option) {
      return parseTime(time, option)
    } else {
      return (
        d.getMonth() +
        1 +
        '月' +
        d.getDate() +
        '日' +
        d.getHours() +
        '时' +
        d.getMinutes() +
        '分'
      )
    }
  }
  
  /**
   * @param {string} url
   * @returns {Object}
   */
  export function param2Obj(url) {
    const search = decodeURIComponent(url.split('?')[1]).replace(/\+/g, ' ')
    if (!search) {
      return {}
    }
    const obj = {}
    const searchArr = search.split('&')
    searchArr.forEach(v => {
      const index = v.indexOf('=')
      if (index !== -1) {
        const name = v.substring(0, index)
        const val = v.substring(index + 1, v.length)
        obj[name] = val
      }
    })
    return obj
  }
  
  /**
  * options [{key,val}]
  * 返回val 或 ''
  * @param {*} key
  * @param {*} options
  */
  export function keyToVal(key, options) {
    if (typeof (key) === 'undefined' || key === null || !Array.isArray(options)) {
      return ''
    }
    for (const i of options) {
      if (i.key === key) return i.val
    }
    return ''
  }
  
  /**
  * 数值格式化
  * 将数字转为EN-US，千分制分隔
  * 失败返回 ''
  * @param {string,number} value
  */
  export function numberFormat(value) {
    const number = +value
    if (isNaN(number)) {
      return ''
    } else {
      const reg = /(?=(\B\d{3})+$)/g
      return number.toString().replace(reg, ',')
    }
  }
  
  /**
   * 深克隆
   * @param {*} obj
   */
  export function deepClone(obj) {
    if (obj === null) return null
    if (obj instanceof Function) return new Function(obj)
    if (obj instanceof Date) return new Date(obj)
    if (obj instanceof RegExp) return new RegExp(obj)
    if (typeof obj !== 'object') return obj
    const result = new obj.constructor()
    const keys = Object.keys(obj)
    for (const k in obj) {
      if (keys.includes(k)) {
        result[k] = deepClone(obj[k])
      }
    }
    return result
  }
  
  /**
   * 防抖函数
   * @param {Function} func
   * @param {number} wait
   * @param {boolean} immediate
   * @return {*}
   */
  export function debounce(func, wait, immediate) {
    let timeout, args, context, timestamp, result
    const later = function() {
      // 距上一次触发时间间隔
      const last = +new Date() - timestamp
      // 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait
      if (last < wait && last > 0) {
        timeout = setTimeout(later, wait - last)
      } else {
        timeout = null
        // 如果设定为 immediate === true，因为开始边界已经调用过了此处无需调用
        if (!immediate) {
          result = func.apply(context, args)
          if (!timeout) context = args = null
        }
      }
    }
    return function(...args) {
      context = this
      timestamp = +new Date()
      const callNow = immediate && !timeout
      // 如果延时不存在，重新设定延时
      if (!timeout) timeout = setTimeout(later, wait)
      if (callNow) {
        result = func.apply(context, args)
        context = args = null
      }
      return result
    }
  }
  
  /**
   * 获取页面卷起高度
   */
  export function getScroolTop() {
    return document.documentElement.scrollTop || window.pageYOffset || document.body.scrollTop
  }
  