jQuery validate less than

Question

I am trying to write a Less than validator for jQuery.

I want to compare one text box against another, so if I have:

Answer 1

I think you can do that without actually writing your own validator method.

$('#myForm').validate({
    rules: {
         value1: {
             maxlength: $('#value2').val().length
         }
    }
});

$('#value2').change(function() {
    $('#value1').rules('remove', 'maxlength').rules('add', {
         maxlength: $('#value2').val().length
    });
});

or even better without code duplication

function getRule() {
    return {
        maxlength: $('#value2').val().length
    };
}

$('#myForm').validate({
    rules: {
         value1: getRule()
    }
});

$('#value2').change(function() {
    $('#value1').rules('remove', 'maxlength').rules('add', getRule());
});