[jQuery] How to keep focus on input field after change?

[cliff]

I would like to keep the cursor in an input field after a change. I
tried the following, but it doesn't work. The change even is
activated, and "do stuff" works, but the focus does not go back to the
input field. Does anyone have suggestions?

$(function() {
        $(":input).change(function() {
            // Do stuff
            $(this).focus();
        });
});