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moment('31-10-2021', 'YYYY-MM-DD').isValid() is true #5928

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UJPrasad opened this issue Sep 2, 2021 · 1 comment

UJPrasad commented Sep 2, 2021

Describe the bug
moment('31-10-2021', 'YYYY-MM-DD').isValid() is giving true when it's not.

To Reproduce
Steps to reproduce the behavior:

moment('31-10-2021', 'YYYY-MM-DD').isValid() -- run it.

Expected behavior
moment('31-10-2021', 'YYYY-MM-DD').isValid() //false

The text was updated successfully, but these errors were encountered:

shreyngd commented Sep 9, 2021

As mentioned in the doc,
YYYY : 4 or 2 digit year. Note: Only 4 digit can be parsed on strict mode

Pass the third param which sets the strict mode as true

moment('31-10-2021','YYYY-MM-DD',true).isValid() // false
moment('31-10-2021','DD-MM-YYYY',true).isValid() // true

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