jQuery form duplicate email validation on exit

Posted by Zach Girod on Stack Overflow See other posts from Stack Overflow or by Zach Girod
Published on 2010-06-16T22:47:41Z Indexed on 2010/06/16 22:52 UTC
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php

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jQuery

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validation

I have a site and I am using this plugin for validation in the registration process. I have seen sites where when you exit the email address field, it goes out and checks to see if the email address exists before you hits the submit button. I know this is ajax but I cannot figure it out.

How do you validate if an email address (or any field) already exists before the users submits the form?

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