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regex input

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Mar 31.2006

Hey guys,

My regex is non-existent right now as I just don’t have time to learn it, but have come across a need for only allowing a string to have 0-9, a-z, A-Z and _

how on earth would I right a regex statement to allow for this….it’s for a username input.

Thanks for any help.

CM

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JavaScript

5 Comments(s) ↴

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@hyperliskMar 31.2006 — <i>
</i>function chackUsername(username){
var r = new RegExp("[a-z|A-Z|0-9|_]","ig");
for(var i=0;i&lt;username.length;i++){
if(! username.charAt(i).match(r)){
alert("Invalid username, please check your spelling!");
return false;
}
}
}

I'm pretty sure that will work.
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@CrazyMerlinauthorMar 31.2006 — thx dude!

I know I must learn it one day...but today just isn't it.

thx again
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@gphApr 01.2006 — I prefer hyperlisks RegExp because it's easier to read but, just so you know, w does the same thing.
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@gphApr 01.2006 — I wasn't thinking straight in my last post. You need to look for [B]non[/B]-word characters. This is true if str contains non-word characters.

/W/.test(str)
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@hyperliskApr 01.2006 — I never really looked into the special codes for RegExp's. The only ones I know are ^ and $. Lol.
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