Example analysis of comparing two timestamps in JS

Instance analysis of comparison of two timestamps in JS

var start=1491789600000;//2017-4-10 10:00 var end=1494381600000;//2017-5-10 10:00 var utc=end-start; 天：utc/(24*60*60*1000); 小时：utc/(60*60*1000); 分：utc/(60*1000);

JavaScript Get the currentTime stamp:
First method:

var timestamp = Date.parse(new Date());

Result:

1280977330000

Second method:

var timestamp = (new Date()).valueOf();

Result:

1280977330748

Third method:
##

var timestamp=new Date().getTime()；

Result:

1280977330748

第一种：获取的时间戳是把毫秒改成000显示，
第二种和第三种是获取了当前毫秒的时间戳。
转换成毫秒之即可比较时间的大小

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