Need a jQuery captcha solution for my registration form

I have a registration form that I validate with jQuery. If there are errors, it says so without page refresh. What I'm trying to do is to implement a captcha that doesn't r开发者_如何学Pythonequire a page refresh to work. I tried implementing Google's reCaptcha but doing it without a page refresh is prohibitively difficult. Are there any captcha plugins for jQuery that will just return true or false right then and there?

Thanks!

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A really simple captcha like you described it is for example the Real Person jQuery plugin.

Generally you can find a lot of jQuery captcha solutions here.

Hope that helps.

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"If there are errors, it will say so without page refresh."

So your not necessarily looking for a captcha plugin, your looking for form validation. Correct? I'm assuming your referring to form errors (invalid email, etc).

Validity works really well and does not require a refresh.

http://validity.thatscaptaintoyou.com/

Edit:

If I misunderstood and an Ajax enabled jquery captcha is what your looking for, this should suffice:

http://www.webdesignbeach.com/beachbar/ajax-fancy-captcha-jquery-plugin