event.keycode Firefox

event.keycode does not work in Firefox

[jaruba]

Now I've been banging my head against the wall with this for a while now.. say I have this script:

<script type="text/javascript">
document.onkeyup = KeyCheck;
function KeyCheck()
{
 var KeyID = event.keyCode;
 switch(KeyID)
 {
 case 13:
 alert("hello");
 }
}
</script>

The code should make an alert box with the text "hello" when someone presses the Enter key.
Why doesn't this work in Firefox? (tested in Chrome, Opera and IE, all work fine)

[birdbrain]

Hi there jaruba,

try it like this...

<script type="text/javascript"> 
document.onkeyup=KeyCheck; 
function KeyCheck(evt) { 
  var evt=(evt)?evt:event; 
  var KeyID = evt.keyCode; 
switch(KeyID) { 
case 13: 
     alert("hello"); 
     break; 
default: 
     alert("not 13"); 
     } 
  } 
</script>  

birdbrain

[jaruba]

You, my friend, are a titan among humble humans.. :))

It works as expected in IE, Firefox, Opera and Chrome. Thank you.

[Fotiman]

The reason, fyi, is that event handling is done differently in IE than other browsers. IE has a single global event object, while other browsers pass the event object to the handler.

[birdbrain]

Hi here jaruba,

You, my friend, are a titan among humble humans...

That is really weird. :)

I awoke this morning as just another "bald headed old fart", then typed
a few characters on my keyboard and became a Greek god before lunch.

birdbrain