'Validating an alphanumeric string having 8 or 11 chars and ending with a specific string [closed]
What would be regex for alphanumeric length is 8 or 11 and not end with XXX.
For example:
Invalid:
Ah7AyXXX
ahs221ssXXX
aed3
Valid:
Xg6tSSw3
ahs221sssws
In JavaScript, I tried with
(^[a-zA-Z0-9]{8}(XXX)$)|(^[a-zA-Z0-9]{11}$)
The pattern only matches some valid strings and also matches some invalid strings, you can see it in the regex demo:
Sources
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