i want to add captcha with ajax

well i have a form in which email and captcha validation was there but now i want to do some thing like if captcha is incorrect or left empty than my form must not reload t开发者_如何学JAVAhe page i.e all those field which are already been filled out must not get blank.

You can either

• A) Submit the form as you are doing right now, and fill the fields with the existing field data

• B) Use a CAPTCHA library that supports AJAX submission, e.g. reCAPTCHA http://wiki.recaptcha.net/index.php/Overview#AJAX_API

I believe that (A) is a lot better because it allows you to deal seamlessly with all other kinds of validation. But depending on what you already have (B) might be trivial to implement. So YMMV.