[Javascript] RegExp question

[Christopher Basken]

Hi,

I've got a page with a bunch of form elements on it.  A bunch of elements
are named "course_01_02" or "course_12_01" and so on.  I want to loop
through them and yank out the values of these elements, but since I also
need to know the digits, I need to match the numbers (not just the beginning
"course").

I've got this function:

function FormValidation(theForm) {

    for (var i = 0; i < theForm.length; i++) {
        var e = theForm.elements[i].name;
        var pattern = new RegExp("course_(\d+)_\d+","ig");
        alert(e.match(pattern)); // test
    }

}

But it keeps coming up Null.  According to the documentation at
developer.netscape.com, this should work.

Any thoughts?

Thanks!

Chris