captcha\CaptchaValidator clientValidateAttribute()

Returns the JavaScript needed for performing client-side validation.

You may override this method to return the JavaScript validation code if the validator can support client-side validation.

The following JavaScript variables are predefined and can be used in the validation code:

• attribute: an object describing the the attribute being validated.
• value: the value being validated.
• messages: an array used to hold the validation error messages for the attribute.
• deferred: an array used to hold deferred objects for asynchronous validation
• $form: a jQuery object containing the form element

The attribute object contains the following properties:

• id: a unique ID identifying the attribute (e.g. "loginform-username") in the form
• name: attribute name or expression (e.g. "[0]content" for tabular input)
• container: the jQuery selector of the container of the input field
• input: the jQuery selector of the input field under the context of the form
• error: the jQuery selector of the error tag under the context of the container
• status: status of the input field, 0: empty, not entered before, 1: validated, 2: pending validation, 3: validating