CODEWITHSUNDEEP
javascriptmomentjs
John P
John P

Reputation: 1221

MomentJS beginner date validation fail

I am trying to validate a date in string format with moment JS.

I use the dd/mm/yy format in pCalendar in ngPrime and the stDate is the value I get.

Here is my code snippet:

var stDate = '02/02/2021';
var stDateMoment = moment(stDate, 'dd/mm/yy');

I can not understand why the expression

stDateMoment.isValid()

returns a false value.

Any ideas or suggestions?

Thank you!

Upvotes: 0

Views: 72

Answers (2)

evolutionxbox
evolutionxbox

Reputation: 4122

You are very almost there. The format tokens are case-sensitive, so using the lowercase dd, mm, and yy is not valid.

const stDate = '02/02/2021';
const stDateMoment = moment(stDate, 'DD/MM/YYYY');

console.log(
  stDateMoment.isValid() 
);
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>

For more information on this, please read the momentjs string format documentation.

The docs also state that two Ys is for two-digit years, but four Ys is for four-digit years.

Upvotes: 1

Ibrahim shamma
Ibrahim shamma

Reputation: 418

creating a Date Object for your formatted date will solve the issue

var stDate = new Date("02/02/2021");
var stDateMoment = moment(stDate,"DD/MM/YY");
const validation = stDateMoment.isValid(); // true

Upvotes: 0

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