CODEWITHSUNDEEP
javascriptmomentjs
mikeym
mikeym

Reputation: 6361

Moment.js returns Invalid Date

The following code

const m = moment('08:45').format('HHmm')

returns

'Invalid date'

I have also tried .format('HH:mm')

Any ideas about what is going wrong here?

Upvotes: 0

Views: 2888

Answers (2)

JBallin
JBallin

Reputation: 9817

The input string doesn't match any of the expected date formats, so you need to add a second argument to tell moment how to parse the input.

String:

When creating a moment from a string, we first check if the string matches known ISO 8601 formats, we then check if the string matches the RFC 2822 Date time format before dropping to the fall back of new Date(string) if a known format is not found.

String + Format:

If you know the format of an input string, you can use that to parse a moment.

moment("12-25-1995", "MM-DD-YYYY");

const result = moment('08:45', 'HH:mm').format('HHmm');

console.log(result);
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.4/moment.min.js"></script>

Upvotes: 0

darthgoldstein
darthgoldstein

Reputation: 112

Just go ahead and pass in a format string as the second argument of the moment() function so that moment knows that you're passing in a time. So change your code to this:

const m = moment('08:45', 'HH:mm').format('HHmm');

and you'll be good to go :)

Upvotes: 1

Related Questions