[ACCEPTED]-Have HTML5's a inputs pattern attribute ignore case-input
Accepted answer
I don't think it is possible.
The specification 10 on
<input pattern>[1,2] specifies thatthe pattern uses the 9 ECMAScript (i.e. Javascript) flavor of regex
it 8 is compiled "with the global, ignoreCase, and 7 multiline flags disabled"
In Javascript, the 6 only way to make a regex ignore case is 5 to set the modifier externally (
/.../i). The PCRE 4 syntax(?i)is not supported.
Therefore, the pattern is always case-sensitive and 3 [a-zA-Z]* (i.e. making the regex itself explicitly 2 case insensitive) is the only way to match 1 the pattern in a case-insensitive way.
Source:
stackoverflow.com
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