关于javascript:小程序毫秒级倒计时适用于拼团秒杀功能

index.js

Page({  /**   * 页面的初始数据   */  data: {    hour: '',    min: '',    second: '',    m_second: '',    endDate2:'2018-11-30 18:00:00'  },  /**   * 生命周期函数--监听页面加载   */  onLoad: function (options) {    var that = this;    that.countTime()  },  countTime() {    var that = this;    var date = new Date();    var now = date.getTime();    var endDate = new Date(that.data.endDate2);//设置截止工夫    var end = endDate.getTime();    var leftTime = end - now; //时间差                                  var d, h, m, s, ms;    if (leftTime >= 0) {      d = Math.floor(leftTime / 1000 / 60 / 60 / 24);      h = Math.floor(leftTime / 1000 / 60 / 60 % 24);      m = Math.floor(leftTime / 1000 / 60 % 60);      s = Math.floor(leftTime / 1000 % 60);      ms = Math.floor(leftTime % 1000);      ms = ms < 100 ? "0" + ms : ms      s = s < 10 ? "0" + s : s      m = m < 10 ? "0" + m : m      h = h < 10 ? "0" + h : h    } else {      console.log('已截止')    }    that.setData({      hour: h,      min: m,      second: s,      m_second: ms    })    //递归每秒调用countTime办法，显示动静工夫成果    setTimeout(that.countTime, 50);  },  })

index.html

<view><text>{{hour+':'+min+":"+second+":"+m_second}}</text></view>