在项目中经常会用到求时间戳的问题，下面是已经封装好的函数，直接使用就可以。

1.js常用获取时间戳的方法

// 获取时间戳var start = new Date().getTime();console.log(start);var end = '1553321456632';console.log(timediff(start,end));function timediff(begin_time, end_time) {if (begin_time < end_time) {starttime = begin_time;endtime = end_time;}else {starttime = end_time;endtime = begin_time;}//计算天数 1s=1000msvar timediff = parseInt((endtime - starttime) / 1000);var days = parseInt(timediff / 86400);//计算小时数var remain = (timediff % 86400);var hours = parseInt(remain / 3600);//计算分钟数var remain = remain % 3600;var mins = parseInt(remain / 60);//计算秒数if((remain % 60) <= 9){var secs = '0'+remain % 60;}else{var secs = remain % 60;}var res = days + "天" + hours + "时" + mins + "分" + secs + "秒";var res1 = hours+":"+mins + ":" + secs;var res2 = mins + ":" + secs;var res3 = secs;return res;//需要什么格式的时间戳，就return 出 res2等}

　　同时，在es6中获取时间戳的写法，如下。其中在es6的方法中函数之间的调用 使用的是 this.funName(); 并且可以传递参数

//函数1；获取开始于结束时间getTimes:function(){//时间戳let start = new Date().getTime();console.log(start);let end = '1553321456632';console.log(this.timediff(start,end));},//调用时间戳，得出想要的时间戳格式timediff(begin_time,end_time){let starttime,endtime,timediff,days,remain,hours,mins,secs;if (begin_time < end_time) {starttime = begin_time;endtime = end_time;}else {starttime = end_time;endtime = begin_time;}//计算天数 1s=1000mstimediff = parseInt((endtime - starttime) / 1000);days = parseInt(timediff / 86400);//计算小时数remain = (timediff % 86400);hours = parseInt(remain / 3600);//计算分钟数remain = remain % 3600;mins = parseInt(remain / 60);//计算秒数if((remain % 60) <= 9){secs = '0'+remain % 60;}else{secs = remain % 60;}let res = days + "天" + hours + "时" + mins + "分" + secs + "秒";let res1 = hours+":"+mins + ":" + secs;let res2 = mins + ":" + secs;let res3 = secs;//res,res1,res2,res3为你想返回的数据格式，比如返回时：分：秒格式 return res1return res+';需要的时间戳格式:'+res1;}