微信小程序实例：如何实现批量倒计时（附代码）

<p class="promotion-label-tits">仅{{item.endtime}}</p>

//封装的倒计时方法
//批量倒计时
function grouponcountdown(that, end_time, param) {
  var endtime = new date(end_time).gettime();
  // console.log(endtime);
  var nowtime = new date().gettime();

  var total_micro_second = endtime - nowtime;

  var groupons = that.data.groupon;
  // console.log(groupons);
  groupons[param].endtime = dateformats(total_micro_second);
  if (total_micro_second <= 0) {
    groupons[param].endtime = "已结束"
  }
  that.setdata({
    groupon: groupons
  })
  settimeout(function () {
    grouponcountdown(that, end_time, param);
  }, 1000)
}

// 时间格式化输出，每1s都会调用一次
function dateformats(micro_second) {
  // 总秒数
  var second = math.floor(micro_second / 1000);
  // 天数
  var day = math.floor(second / 3600 / 24);
  // 小时
  var hr = math.floor(second / 3600 % 24);
  var hrstr = hr.tostring();
  if (hrstr.length == 1) hrstr = '0' + hrstr;

  // 分钟
  var min = math.floor(second / 60 % 60);
  var minstr = min.tostring();
  if (minstr.length == 1) minstr = '0' + minstr;

  // 秒
  var sec = math.floor(second % 60);
  var secstr = sec.tostring();
  if (secstr.length == 1) secstr = '0' + secstr;

  if (day <= 1) {
    return "剩 " + hrstr + ":" + minstr + ":" + secstr;
  } else {
    return "剩 " + day + " 天 " + hrstr + ":" + minstr + ":" + secstr;
  }
}
//end

var app=getapp()
page({

  /**
   * 页面的初始数据
   */
  data: {
      collageteamlist : {}
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onload: function (options) {
      app.showloading();
      var that = this
     
      wx.request({
          success:function(res){
              var grouponlist = request.data.collageteamlist
              // console.log(grouponlist);
              for (var i = 0; i < grouponlist.length; i++) {
                 var lack_num = grouponlist[i].create_num - grouponlist[i].current_num
                 grouponlist[i].lack_num = lack_num
              }

              that.setdata({
                  groupon: grouponlist
              })
              var data = that.data.groupon
              //列表获取到数据进行遍历
              for (var i = 0; i < data.length; i++) {
                  var end_time = data[i].end_time.replace(/-/g, '/')
                  grouponcountdown(that,end_time, i)
              }
          },
      })
  },