How to add a Not Equal To rule in jQuery.validation

Question

I was wondering how to make it so that I could make a rule where a field is not equal to a value. Like I have a field called \'name\' so I don\'t want \'name\' = \'Your Name

Answer 1

I propose a multi-valued function...

jQuery.validator.addMethod("notEqualTo",
function(value, element, param) {
    var notEqual = true;
    value = $.trim(value);
    for (i = 0; i < param.length; i++) {
        if (value == $.trim($(param[i]).val())) { notEqual = false; }
    }
    return this.optional(element) || notEqual;
},
"Please enter a diferent value."
);

And I call it...

$("#abm-form").validate({
debug: true,
rules: {
    password1: {
        required: true,
        minlength: 10,
        notEqualTo: ['#lastname', '#firstname', '#email']
    },
    password2: {
        equalTo: '#password1'
    }
}
});

This works for me!

Answer 2

Thanks for @Nick Craver♦'s answer, but in my working environment, it needs to be slightly modified before it could work.

 $.validator.addMethod("notEqualTo", function(value, element, param) {
       return this.optional(element) || value != $(param).val();
 }, 'This two elements are the same, please change it.');

Answer 3

There's one called "notEqualTo" in additional-methods.js in the download package:

https://github.com/jzaefferer/jquery-validation/blob/master/src/additional/notEqualTo.js