javascript keypress function: case-insensitive a-z, numbers and a few special chars?

Posted by user239831 on Stack Overflow See other posts from Stack Overflow or by user239831
Published on 2011-01-02T08:26:48Z Indexed on 2011/01/02 8:53 UTC
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jQuery

|

regex

|

AJAX

hey guys,

$('.s').keyup(function(e) {

    if (!/[A-Za-z0-9]/.test(String.fromCharCode(e.which))) {
        return false;
    }

I wonder what is the best regex solution for my application. I have an ajax-based search that should just trigger the search when actual characters are pressed like a-Z (upper and lowercase), numbers and maybe a questionmark, a dash(hyphen), and an exclamation mark. Also the spacebar should be enabled.

Otherwise the ajax search would be triggered as well if the shift-, option, or control-key, is pressed.

What's the easiest regex pattern to understand here? thank you for your help

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