Javascript: Pass event AND element reference

Question

I want an input field which calls a javascript function, if a key is pressed. But I'm not able to pass the event as well as an element reference. I can either pass the event:

<input type="text" name="chmod" value="644" onkeypress="chmod(e)">

or pass the element reference:

<input type="text" name="chmod" value="644" onkeypress="chmod(this)">

If I try to pass both there occurs an error:

<input type="text" name="chmod" value="644" onkeypress="chmod(e, this)">

Uncaught ReferenceError: e is not defined

Is there any way to pass both, the event and a reference to the element?

Cheers, Marco

Answer 1

<input type="text" name="chmod" value="644" onkeypress="chmod(event, this)">

Answer 2

I'd do the following:

<input type="text" name="chmod" value="644" onkeypress="chmod">

Then your js:

function chmod(e) {
    var element = e.target;
    ...
}

Answer 3

You should have a reference to the element in the event: event.target.

Answer 4

The this keyword is already in the function

<script>
function chmod(e) {
    var elem = this;
}
</script>

<input type="text" name="chmod" value="644" onkeypress="chmod">