小程序基础开发（四）：template模板应用(4)——倒计时组件，日时分秒

倒计时

wxml

<view class='tui-countdown-content font10pt' wx:for="{{countDownList}}" wx:key="countDownList">
    <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

/*倒计时样式*/
.tui-countdown-content{
  height: 100rpx;
  line-height: 100rpx;
  text-align: center;
  background-color: #fff;
  margin-top: 15rpx;
  padding: 0 15rpx;
  font-size: 28rpx;
}
.tui-conutdown-box{
  display: inline-block;
  height: 46rpx;
  width: 46rpx;
  line-height: 46rpx;
  text-align: center;
  background-color: #000;
  color: #fff;
  margin: 0 15rpx;
}
.tui-countdown-bg{
  background-color: red;
}

js

  data: {
	actEndTimeList: [],
  },
  onLoad: function (options) {

  },
    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，同时得到倒计时结束时间数组
    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;
      // 如果倒计时未结束，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 {//倒计时已结束，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);
  },