title: How to capture a backspace on the onkeydown event
body: <p>I have a function that is triggered by the <a href="https://developer.mozilla.org/en-US/docs/Web/Events/keydown" rel="noreferrer"><code>onkeydown</code></a> event of a textbox. How can I tell if the user has hit either the backspace key or the del key?</p>