[jQuery] Firing function on any form element changing?

[jQuery] Firing function on any form element changing?


I have a script that fires if any input or select element changes on
my form:
    $('input, textarea, select').change(function(){
First, is this the correct way to do this?
Second, how do I make sure that only the elements in form "myform" are
the one that are being monitored for change? The form appears on a web
page with other forms.
I tried:
    $('input, textarea, select', myform).change(function(){
but it says that myform is undefined.