如何在JS中比较时间

Question

How can compare two variables in JS with value as time string in the below format

Mon, 29 Feb 2016 09:09:53 GMT
Thu, 21 Jan 2016 05:08:46 GMT

Simply doing x > y will work ??? Or Do I need to convert into other format..

strtotime()

above function is available in php which will parse that format into a Unix timestamp (the number of seconds since January 1 1970 00:00:00 UTC).

Is there any function to do the same in JS ??

Answer 1

 Date.parse('Mon, 29 Feb 2016 09:09:53 GMT') > Date.parse('Thu, 21 Jan 2016 05:08:46 GMT')

真正

Answer 2

In Javascript, you should compare Date objects:

var foo = new Date("Mon, 29 Feb 2016 09:09:53 GMT");
var bar = new Date("Thu, 21 Jan 2016 05:08:46 GMT");

if(foo > bar) { ... }

There are multiple ways of creating an instance of the Date object. You can read more about it on MDN .

Storing the time string in a variable:

var foo = "Mon, 29 Feb 2016 09:09:53 GMT";
var bar = new Date(foo);

Answer 3

I got it.
getTime() returns the number of milliseconds since January 1, 1970:

<script>
var d = new Date();
var time = d.getTime();
</script>