How to eliminate a prefix of '0' before a number using jquery

Question

I need a jquery script section that checks to see if the first digit of a textbox entered number string is a '0' and eliminate it if so. For example "044055" needs to become "44055"

Answer 1

Like this:

$(':text.Number').change(function() {
    $(this).val(function(index, oldVal) { return oldVal.replace(/^0+/, ''); });
});

Answer 2

>>> parseInt("044055", 10)
44055

Update

I guess I should add some explanations. The above is a method to extract an integer from a string. It takes for granted that the string actually contains a number.