Pure JavaScript/jQuery/HTML captcha

Question

can somebody sent me a link, or to provide me an example with pure Javascript/jQuery captcha. Because I can see a lots of examples with PHP/C# ... back end. But I need just

Answer 1

I wrote a tutorial on making a simple math captcha using PHP and jQuery, so it works with or without Javascript enabled. This should be very easy to integrate into your own scripts, or you can use it as is. You can download the project, extract the zip file, and it works out of the box. I hope you find this useful.

Making a Simple Math Captcha using both jQuery and PHP http://www.sinawiwebdesign.com/blog/topics/programming/jquery-and-php-and-catcha-tutorial/