微信小程序----团购或秒杀的批量倒计时实现

js:

let goodsList = [
  {actEndTime: '2018/05/01 10:00:43'},
  {actEndTime: '2018/04/01 11:00:00'},
  {actEndTime: '2018/06/01 12:45:56'},
  {actEndTime: '2018/07/01 15:00:23'},
  {actEndTime: '2018/05/23 17:00:22'},
  {actEndTime: '2018/05/14 19:00:44'},
  {actEndTime: '2018/05/21 21:00:34'},
  {actEndTime: '2018/06/17 09:00:37'},
  {actEndTime: '2018/03/21 05:00:59'},
  {actEndTime: '2018/04/19 07:00:48'},
  {actEndTime: '2018/04/28 03:00:11'}
]
Page({
  data: {
    countDownList: [],
    actEndTimeList: []
  },
  onLoad(){
    let endTimeList = [];
    // 将活动的结束时间参数提成一个单独的数组，方便操作
    goodsList.forEach(o => {endTimeList.push(o.actEndTime)})
    this.setData({ actEndTimeList: endTimeList});
    // 执行倒计时函数
    this.countDown();
  },
  timeFormat(param){//小于10的格式化函数
    return param < 10 ? '0' + param : param; 
  },
  countDown(){//倒计时函数
    // 获取当前时间，同时得到活动结束时间数组
    let newTime = new Date().getTime();
    let endTimeList = this.data.actEndTimeList;
    let countDownArr = [];

    // 对结束时间进行处理渲染到页面
    endTimeList.forEach(o => {
      let endTime = new Date(o).getTime();
      let obj = null;
      // 如果活动未结束，对时间进行处理
      if (endTime - newTime > 0){
        let time = (endTime - newTime) / 1000;
        // 获取天、时、分、秒
        let day = parseInt(time / (60 * 60 * 24));
        let hou = parseInt(time % (60 * 60 * 24) / 3600);
        let min = parseInt(time % (60 * 60 * 24) % 3600 / 60);
        let sec = parseInt(time % (60 * 60 * 24) % 3600 % 60);
        obj = {
          day: this.timeFormat(day),
          hou: this.timeFormat(hou),
          min: this.timeFormat(min),
          sec: this.timeFormat(sec)
        }
      }else{//活动已结束，全部设置为'00'
        obj = {
          day: '00',
          hou: '00',
          min: '00',
          sec: '00'
        }
      }
      countDownArr.push(obj);
    })
    // 渲染，然后每隔一秒执行一次倒计时函数
    this.setData({ countDownList: countDownArr})
    setTimeout(this.countDown,1000);
  }
})

wxml

<view class='tui-countdown-content' wx:for="{{countDownList}}" wx:key="countDownList">
  剩余
  <text class='tui-conutdown-box'>{{item.day}}</text>天
  <text class='tui-conutdown-box'>{{item.hou}}</text>时
  <text class='tui-conutdown-box'>{{item.min}}</text>分
  <text class='tui-conutdown-box tui-countdown-bg'>{{item.sec}}</text>秒
</view>
 

css

page{background-color: #eee;}
.tui-countdown-content{
  height: 50px;
  line-height: 50px;
  text-align: center;
  background-color: #fff;
  margin-top: 15px;
  padding: 0 15px;
  font-size: 18px;
}
.tui-conutdown-box{
  display: inline-block;
  height: 26px;
  width: 26px;
  line-height: 26px;
  text-align: center;
  background-color: #000;
  color: #fff;
  margin: 0 5px;
}
.tui-countdown-bg{
  background-color: #DF0101;
}

原文链接：https://blog.csdn.net/m0_38082783/article/details/79851175

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