let app = new Vue({
  el: '#app',
  data () {
    return {
      time: '',
    }
  },
  beforeMount () {

  },
  mounted () {
    console.log(document.documentElement.scrollWidth,document.documentElement.scrollHeight,'?????????')
    this.time = formatDate()
    this.timer = setInterval(() => {
      this.time = formatDate()
    }, 1000)
  },
  beforeDestroy () {
    if (this.timer) {
      clearInterval(this.timer)
    }
  },
  methods: {
    numFormat (value) {
      if (!value) return '0'
      // var intPart = Number(value).toFixed(0) // 获取整数部分
      var intPart = parseInt(value)// 获取整数部分
      var intPartFormat = intPart.toString().replace(/(\d)(?=(?:\d{3})+$)/g, '$1,') // 将整数部分逢三一断

      var floatPart = '.00' // 预定义小数部分
      var value2Array = value.toString().split('.')
      // =2表示数据有小数位
      if (value2Array.length === 2) {
        floatPart = value2Array[1].toString() // 拿到小数部分
        if (floatPart.length === 1) {
          // 补0
          return intPartFormat + '.' + floatPart + '0'
        } else {
          return intPartFormat + '.' + floatPart
        }
      } else {
        return intPartFormat
      }
    },
  },
})