Date substract in javascript

Question

How do I subtract dates in JavaScript? I have a string of a date and i would like to subtract from it another date.
I would like to do that in a function:

function substractDate(date1, date2){
}

How can i that in proper JavaScript?

What output are you looking for? – Jonas Äppelgran Feb 13 '14 at 14:36 — Jonas Äppelgran, Feb 13 '14 at 14:36
Have you tried anything? – Yury Tarabanko Feb 13 '14 at 14:36 — Yury Tarabanko, Feb 13 '14 at 14:36

score 0 · Answer 1 · answered Feb 13 '14 at 14:37

0

var date1 = new Date(),
    date2 = new Date();

function subtractDate(date1, date2) {
    subtracted = new Date(+date1 - +date2);
    return subtracted;
}

JSFiddle demo.

answered Feb 13 '14 at 14:37

James Donnelly

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If `date1` and `date2` are `Date` objects, you can omit the unary `+` operator. – MaxArt Feb 13 '14 at 14:41
@MaxArt ooh, I never knew that! – James Donnelly Feb 13 '14 at 14:41
It works for every object that has a `valueOf` method ;) For `Date` objects, it's the same of `getTime`. – MaxArt Feb 13 '14 at 14:45

score 0 · Answer 2 · answered Feb 13 '14 at 14:38

0

Try out:

var dtOne = new Date( "2014/01/01" );
var dtTwo = new Date( "2014/02/02" );
var dtDelta = Math.abs( dtOne - dtTwo );

answered Feb 13 '14 at 14:38

Juergen Riemer

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score 0 · Answer 3 · answered Feb 13 '14 at 14:38

0

// will get second
var substract = (date1.getTime() - date2.getTime()) / 1000;

answered Feb 13 '14 at 14:38

Chen-Tsu Lin

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Date substract in javascript

3 Answers3