yav - javascript validation tool
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Example 4
Here you can learn more about the ajax calls with yav using the post validation.
[This is a trivial captcha example (you must have cookies enabled because of our server's settings for php).
In a real web application you should use a more secure captcha service. The captcha validation is case insensitive.]
source
var rules=new Array(); rules[0]='code:the captcha code|required'; yav.addHelp('code', 'Please enter the characters on the image above'); yav.postValidation_OnOK('code', 'blur', 'ajaxCall()');
Captcha Example
Enter the code:
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