Vanadium Ajax usage of form validation?

Found a form-verified jquery on the web
Http://mrthink.net/jquery-form-valida ...
This effect is very good, the usage is very simple, support Ajax
But I don't know how to use Ajax PHP to verify that a user name exists
For help, I am not very familiar with Ajax.

Reply content:

Found a form-verified jquery on the web
Http://mrthink.net/jquery-form-valida ...
This effect is very good, the usage is very simple, support Ajax
But I don't know how to use Ajax PHP to verify that a user name exists
For help, I am not very familiar with Ajax.

An example of jquery's Ajax authentication username

Verify user Name JS method uname:: Enter the user name function Ajax_check_uname (uname) {    var url = '/check/uname.php ';//Here is your PHP    $.post ( Url,{uname:uname},function (data) {        if (' success ' ==data) {            return true;//on behalf of validation success!        } else{            //verification failure how to deal with yourself to study it        }    ); PHP section if (isset ($_post[' uname ')) {  //Secure data processing  #TODO  //Database query if exit (' success ') is not present;  If present, return the error message you need  //Maybe you should use the JSON format to study it specifically.

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