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Detecting Keypress in Javascript

I wrote a small test to try to capture keyup event.

It doesn't work, see attached code.

What's wrong?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
	<title>Check Key Press</title>
<script type="text/javascript">	
document.st.onkeyup = KeyCheck; 
function KeyCheck() {
	var KeyID = document.st.onkeyup.keyCode;
	if (var == 13) {
		alert("Enter pressed");
	} else {
		alert("other key pressed");
	}		
  // -->
</script>	 
</head>

<body>
<form method="post" name="st">
	<input type="text" name="txt" size="3"><br><br>
	<input type="submit" value="Submit">
</form>


</body>
</html>

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leakim971

Hello rkorts,

Check this :

<html><head>
<script language="javascript">
	function CommentCharacterLimit(event) {
			document.getElementById("myid").innerHTML = ((window.event)?(window.event.keyCode):(event.which));
	}
</script>
</head>
<body onkeyup="CommentCharacterLimit(event);">
<div id="myid"></div>
</body>
</html>

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leakim971

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Richard Korts

ASKER

Works good, but I still can't understand why it has to be so complex.

leakim971

>Works good, but I still can't understand why it has to be so complex.
Because it's not the same code for Netscape like and IE navigator.

leakim971

Thanks for the points!

leakim971

Check this link : http://www.w3schools.com/jsref/event_onkeypress.asp