On text changed in Javascript

Question

i need to be able to able to detect when any character is entered into a textbox in Javascript, and clear another corresponding textbox. I have used the onfocus method for this but when tabbing between textboxes to get to submit, it removes the data and I don't want it to.

What methods are there I can use to trigger a JS event when a textbox is entered into?

Answer 1

There are the following events

onkeydown

onkeyup

onkeypress

Answer 2

If you use jQuery:

$("#myTextbox").keypress()
$("#myTextbox").keyup()
$("#myTextbox").keydown()

and if you want to find out which key was pressed, try:

$("#myTextbox").keydown(function(e){ alert(e.which); });

if you're not using e.which, you're gonna have cross-browser problems.