How to convert time to milliseconds in javascript

Javascript method to convert time to milliseconds: 1. Convert date to milliseconds through "(new Date(startDate)).getTime();" 2. Convert date to milliseconds through "Date.parse(new Date(arr[ 0]...)" method to convert the date into milliseconds.

The operating environment of this article: Windows 7 system, javascript version 1.8.5, Dell G3 computer.

javascript How to convert time to milliseconds?

Convert date to milliseconds

If the format is: yyyy/mm/dd hh: mm:ss 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 be converted into 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 dates into 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)

Recommended learning: "javascript Basic Tutorial》

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