js time to millisecond conversion

This article mainly introduces the conversion between js time and milliseconds. It has certain reference value. Now I share it with everyone. Friends in need can refer to it

1) Convert date to milliseconds

If the format is: yyyy/mm/dd hh:mm:ss, it can be converted directly. var oldTime = (new Date("2018/07/09 14:13:11")).getTime(); //Get the number of milliseconds

If the date format is: yyyy-mm-dd hh:mm :ss needs to convert the format

var startDate ='2018-07-09 14:13:11'; startDate= startDate.replace(new RegExp("-","gm"),"/"); var startDateM = (new Date(startDate)).getTime(); //得到毫秒数

Another way to convert date to milliseconds:

var str = '2018-07-09 14:13:11'; var arr = str.split(/[- : \/]/); var startDate = Date.parse(new Date(arr[0], arr[1]-1, arr[2], arr[3], arr[4], arr[5])); console.log(startDate)

2) Convert milliseconds to time

var endDate = (new Date("2018/072/09 14:13:11")).getTime(); //得到毫秒数 var newDate = new Date(endDate ); //得到普通的时间了

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