jQuery自定义验证错误

Question

I am facing the following issue with the JQuery validator: I have a form where I am using the default validation rules provided and everything works fine. Howoever, as soon as I add a custom validation, the following error is thrown:

1. in Chrome: Uncaught TypeError: Cannot call method 'addMethod' of undefined
   
2. in IE8: 'validator' is null or not an object
   
3. FireFox: no error message, but the JQuery default validation logic breaks;

The piece of code which is causing the error to occur is this (it sits inside the ready function):

$().validator.addMethod("defaultInvalid", 
   function(value, element) {   
    alert("validate");
   }
 );

As you see I have commented most of the code of the callback function in order to eliminate any other error. if I comment it, everything goes back to normal. However, I would like to use this customized rule on a text box taht must have the default value of "First name" and on submit it should not allow the user to send "First name" as value.

Answer 1

Looking at this, validator won't be found as it's looking inside $() . You need to just use $.validator.addMeth.... which goes into the default jquery object.

Like this:

$.validator.addMethod("defaultInvalid", 
   function(value, element) {   
    alert("validate");
});

or whatever you use to access Jquery object

JQuery.validator.addMethod("defaultInvalid", 
   function(value, element) {   
    alert("validate");
});