Hello

I need a valid regex for validating a input field, that goes from 0 to 20 with 3 decimal places, with comma as a decimal delimiter.

This is for people stating their grade at a certain discipline.

from 0,000 to 20,000, should be ok, negative and over 20,000 (ex 20,001+) should put the warning in the input field bold.

The regex i tried is this
^([0-9]\,[0-9][0-9])?$|(1[0-9]\,[0-9][0-9])?$|(20\,[0-9][0-9])?$
On this site, http_s://regex101.com/r/bQ5sM4/12

Seems to validate, but when placed here:


fails the warning


Thx for the help in advance

Best regards

Nuno Reis

With numeric question type : surely more easy to use min value and max value.

Regexp is done for string. For numerci string is updated to number when tested. Then 20,111 is updated to 20111.

Good morning

Yes, you are right, tunnel vision on my part.
Used regex for other fields before, did not even think any further.



Thx