Wrong pattern for html text inputs

Question

In the Firefox console (no message for Chrome). I got this error :

Unable to check < input pattern = '[^? <> |?!; = \,;:] *' > Because the pattern is not a valid regular expression: invalid identity escape in regular expression

I checked here but it does not seem to be the same case.

I checked here but in my case I have to keep the backslash in my pattern to avoid an antislash insert from the users.

I checked my pattern on https://regex101.com/ and it seem to be all right.

That happens for [^?<>|?!;=\,;:]* and [^?<>|?;=\]*.

Someone has got an idea ?

Possible duplicate of Invalid regular expression in HTML5 input pattern — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Nov 30, 2018 at 14:39
You should not escape commas in a regex compiled with u modifier. — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Nov 30, 2018 at 14:39

J.BizMai · Accepted Answer · 2018-11-30 14:49:34Z

0

The problem for Firefox is the backslash. To resolve this problem you must escape the backslash with another one like this : [^<>|?!=\\,;:]*

answered Nov 30, 2018 at 14:49

J.BizMai

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