Angular date comparison keep return wrong result

Question

I was having some problem when trying to compare dates in Angular typescript. Here is my code:

let todayDate = new Date();
if ((Date.parse(this.staff.staffDOB.format(DATE_FORMAT))) >= (Date.parse(this.datePipe.transform(todayDate, DATE_FORMAT)))){
            this.isValidDob = false;
        }

The example of staffDOB is in this format '2019-03-07'. Then I kept getting true returned regardless of changing the compare operator to <= or >=.

I not sure which part went wrong. Any ideas? Thanks!

TypeScript compiles to JavaScript, so the runtime behavior is exactly the same. — Heretic Monkey, Mar 28 '19 at 17:14
Possible duplicate of [Compare two dates with JavaScript](https://stackoverflow.com/questions/492994/compare-two-dates-with-javascript) — Heretic Monkey, Mar 28 '19 at 17:14
Can you try doing `new Date(DATE_FORMAT).getTime() >= new Date(todayDate).getTime()` ? — AskYous, Mar 28 '19 at 17:17
What is the result of this.datePipe.transform(todayDate, DATE_FORMAT) — ukn, Mar 28 '19 at 17:19
@AskYous I am trying to compare the specified date with today date though — QWERTY, Mar 28 '19 at 17:24
Ok. You can get todays date with `new Date().getTime()`. Just don't pass any parameters. — AskYous, Mar 28 '19 at 17:25
I think I wrote my code wrong. Try this: `new Date(this.staff.staffDOB).getTime() >= new Date().getTime()`. — AskYous, Mar 28 '19 at 17:26
@AskYous I am getting this error message: Argument of type Moment is not assignable to type of string — QWERTY, Mar 28 '19 at 17:28
Ok. That means your using MomentJS. So you can do `this.staff.staffDob.isSameOrAfter(new Date())` — AskYous, Mar 28 '19 at 17:29

score 0 · Accepted Answer · answered Mar 28 '19 at 17:30

0

It seems you're using Moment.js. So you can do:

this.staff.staffDob.isSameOrAfter(new Date())

More details: https://momentjs.com/docs/#/query/is-same-or-after/

answered Mar 28 '19 at 17:30

AskYous

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Angular date comparison keep return wrong result

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