Best way to track onchange as-you-type in input type=“text”?

Question

In my experience, input type=\"text\" onchange event usually occurs only after you leave (blur) the control.

Is there a way to

Answer 1

I had a similar requirement (twitter style text field). Used onkeyup and onchange. onchange actually takes care of mouse paste operations during lost focus from the field.

[Update] In HTML5 or later, use oninput to get real time character modification updates, as explained in other answers above.