jquery-validate - addMethod - how to apply custom rule referencing two text boxes?

Question

I\'m using the jQuery validation plugin and I want make use of a custom method which takes two the values entered into two different textboxes into account when deciding if

Answer 1

Try the following:

Create the Rule

jQuery.validator.addMethod("checkTotal",function(value) {
    total = parseFloat($('#LHSOPERAND').val()) + parseFloat($('#RHSOPERAND').val());
    return total == parseFloat($('#TOTAL').val());
}, "Amounts do not add up!");

jQuery.validator.classRuleSettings.checkTotal = { checkTotal: true };

Input

<input type="text" name="TOTAL" id="TOTAL" class="required checkTotal" />

Init Validation

$(document).ready(function() {
    $("#TOTALSFORM").validate();
});

Fiddle here: http://jsfiddle.net/wTMv3/