Date.prototype.setTime()

The setTime() method sets the Date object to the time represented by a number of milliseconds since January 1, 1970, 00:00:00 UTC.

Syntax

setTime(timeValue)

timeValue: An integer representing the number of milliseconds since 1 January 1970, 00:00:00 UTC.

The number of milliseconds between 1 January 1970 00:00:00 UTC and the updated date (effectively, the value of the argument).

Use the setTime() method to help assign a date and time to another Date object.

var theBigDay = new Date('July 1, 1999');
var sameAsBigDay = new Date();
sameAsBigDay.setTime(theBigDay.getTime());

Specification
ECMAScript Language Specification # sec-date.prototype.settime

	desktop						mobile						server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	Deno	Node.js
`setTime`	ChromeFull support1	EdgeFull support12	FirefoxFull support1	Internet ExplorerFull support3	OperaFull support3	SafariFull support1	WebView AndroidFull support1	Chrome AndroidFull support18	Firefox for AndroidFull support4	Opera AndroidFull support10.1	Safari on iOSFull support1	Samsung InternetFull support1.0	DenoFull support1.0	Node.jsFull support0.10.0