微信小程序实现日期格式化和倒计时

Date.prototype.Format = function (fmt) { //author: meizz 
 var o = {
 "M+": this.getMonth() + 1, //月份 
 "d+": this.getDate(), //日 
 "h+": this.getHours(), //小时 
 "m+": this.getMinutes(), //分 
 "s+": this.getSeconds(), //秒 
 "q+": Math.floor((this.getMonth() + 3) / 3), //季度 
 "S": this.getMilliseconds() //毫秒 
 };
 if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
 for (var k in o)
 if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) "00" + o[k]).substr(("" + o[k]).length)));
 return fmt;
 
}

formatDateTime:function(theDate) {
 var _hour = theDate.getHours();
 var _minute = theDate.getMinutes();
 var _second = theDate.getSeconds();
 var _year = theDate.getFullYear()
 var _month = theDate.getMonth();
 var _date = theDate.getDate();
 if (_hour < 10) { _hour ="0" + _hour }
 if (_minute < 10) { _minute = "0" + _minute }
 if (_second < 10) { _second = "0" + _second }
 _month = _month + 1
 if (_month < 10) { _month = "0" + _month; }
 if (_date < 10) { _date ="0" + _date }
 var time= _year + "-" + _month + "-" + _date + " " + _hour + ":" + _minute + ":" + 
 _second;
// var time = new Date();
// var formatTime = formatDateTime(time);
// 返回结果：
// Tue Jun 06 2017 15:31:09 GMT+ 0800(中国标准时间)
// 2017 - 06 - 06 15:31:09
//clock为在data中定义的空变量，存放转化好的日期
 this.setData({
 clock: time
 })
},

var formatTimeS = new Date('2017-06-06 15:31:09').getTime();

var formatTimeS = new Date(1496734269900);

//倒计时:其中time_canshu为传入的毫秒数
date_format: function (time_canshu) {
 // let formatTime1 = new Date().getTime();
 // let formatTime2 = new Date('2018-04-24 15:31:09').getTime();
 // let formatTimeS = new Date(formatTime2 - formatTime1);
 var none = '00:00:00';
 if (formatTimeS<=0){
 this.setData({
 clock: none
 })} else {
 // 秒数
 letsecond = Math.floor(time_canshu / 1000);
 // 小时位
 lethr = Math.floor(second / 3600);
 // 分钟位
 letmin = Math.floor((second - hr * 3600) /60);
 // 秒位
 letsec = second % 60;// equal to => var sec = second % 60;
 if (hr <= 9) hr ='0' + hr;
 if (min <= 9) min ='0' + min;
 if (sec <= 9) sec ='0' + sec;
 lettime = hr + ":" + min + ":" + sec + " ";
 this.setData({
 clock: time
 })
 }
},

//时间戳转化为日期格式
function timestampToTime(timestamp) {
 var date = new Date(timestamp * 1000);//时间戳为10位需*1000，时间戳为13位的话不需乘1000
 var Y = date.getFullYear() + '-';
 var M = (date.getMonth()+1 < 10 "htmlcode">

secondToDate (result) {
 if (result > 60) {
 let d = parseInt(Math.floor(result / 86400))
 let h = d > 0"_blank" href="//www.jb51.net/Special/900.htm">《微信小程序开发教程》小编为大家精心整理的，希望喜欢。

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