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

Consider (A) is the name of the input that you want the value of it to be less than (#B) input. this code worked with me after making the type of the two inputs is: type="number"

$("#form").validate({
    rules: {
        A: {
            lessThan: "#B"
        }
    }
});