How to validate username using Javascript?

Posted by Dusk on Stack Overflow See other posts from Stack Overflow or by Dusk
Published on 2010-05-15T21:56:26Z Indexed on 2010/05/15 22:02 UTC
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Hi, I want to know how can I validate using Javascript that if user has entered any username at the time of creating an account is already present in database and ask user to type any other username?

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