微信小程序商城拼团商品、抢购商品倒计时

//单个倒计时，适用用于单个商品的倒计时
function countdown(that) {
var EndTime = that.data.end_time || [];//倒计时的结束时间
var NowTime = new Date().getTime();//当前时间

var total_micro_second = EndTime - NowTime || [];//剩余的微秒

// 渲染倒计时时钟
that.setData({
count: dateformat(total_micro_second)
});
if (total_micro_second <= 0) {
that.setData({
count: "已经截止"
});
return;
}
setTimeout(function () {
countdown(that);
}, 1000)
}
//适用于商品列表倒计时
/**
* end_time int 结束时间
* param int 数组键
*/
function grouponcountdown(that, end_time,param){
var EndTime = end_time  || [];
var NowTime = new Date().getTime();

var total_micro_second = EndTime - NowTime || [];

var groupons = that.data.groupon;
groupons[param].endtime = dateformat(total_micro_second);
if (total_micro_second <= 0) {
groupons[param].endtime = "已经截止"
}
that.setData({
groupon: groupons
})

setTimeout(function () {
groupcount(that, end_time,param);
}, 1000)
}
// 时间格式化输出，如11:03 25:19 每1s都会调用一次
function dateformat(micro_second,t = 0) {
// 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);
// 分钟
var min = Math.floor(second / 60 % 60);
// 秒
var sec = Math.floor(second % 60);
if (t == 0) {
return day + "天" + hr + "小时" + min + "分钟" + sec + "秒";
}else{
return  hr + "小时" + min + "分钟" + sec + "秒";
}
}

//商品列表获取到数据进行遍历
for (var i = 0; i < (that.data.group.length); i++) {
grouponcountdown(that, (that.data.group[i].endtime),i)
}