TypeScript: Get difference between two dates in days

Question

I need to get the difference between two dates in days.

Up to now, I've been able to get the difference between two dates, but not in days:

date1.getTime() - date2.getTime();

Any ideas?

I strongly believe this question is not duplicate to attached. The attached question/answer gives different between two dates in years/months/days, but this question is different between two dates in days only. The below answer by @mohammad works. — yallam, Aug 12 '17 at 05:03
The date-fns library's differenceInDays function is good for this https://date-fns.org/docs/differenceInDays — Ollie, Aug 30 '20 at 22:55

score 78 · Answer 1 · edited Mar 18 '23 at 08:58

78

var date1 = new Date(2023, 1, 1);
var date2 = new Date(2023, 2, 1);
var diff = Math.abs(date1.getTime() - date2.getTime());
var diffDays = Math.ceil(diff / (1000 * 3600 * 24)); 
console.log("Diff in Days: " + diffDays);

edited Mar 18 '23 at 08:58

Master

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answered May 02 '17 at 10:41

mohammad

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This will work with daylight savings as well? – Mihir Mar 29 '20 at 11:51
2

no, it won't work with daylight savings – Ollie Aug 30 '20 at 22:46

score 16 · Answer 2 · answered May 02 '17 at 10:46

16

I believe the shortest route is:

var diff = date1.valueOf() - date2.valueOf();

answered May 02 '17 at 10:46

Roy Dictus

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I am not sure that is entirely correct by itself, I think you still need to do the diffDays calculation from the other answer. But it is correct you can replace the first statement in the other answer with what you suggest. – aggaton Apr 16 '20 at 19:23

TypeScript: Get difference between two dates in days

2 Answers2