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fake keypress

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jaschulz

jaschulz

Programmer
May 20, 2005
89
FR
The function below is intended to put an upper-case "P" into a textarea. It raises no exception or error, but it doesn't actually do anything except move the focus to the textarea in question.

What am I doing wrong?

JAS

function fakeKeyPress(elementID){
var thisTarget = document.getElementById(elementID);
thisTarget.focus();
if( window.KeyEvent ) {
var evObj = document.createEvent('KeyEvents');
evObj.initKeyEvent( 'keyup', true, true, window, false, false, false, false, 0x50, 0 );
} else {
var evObj = document.createEvent('UIEvents');
evObj.initUIEvent( 'keyup', true, true, window, 1 );
evObj.keyCode = 0x50;
}
thisTarget.dispatchEvent(evObj);
}
 
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What browser is it not working in?

howtocreate.co.uk said:
This is currently supported by Opera 7+, Mozilla/Firefox, Konqueror 3.0+, and Safari. It is also partially supported by iCab 3+, ICEBrowser 5+, and NetFront 3.3+.
Click to expand...

Hope this helps,
Dan

[tt]Dan's Page [blue]@[/blue] Code Couch
[/tt]
 
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I've tried IE6, FF 1.5.0.1 and Opera 8.54 and I can't get it to work in any of them.

Try the below in any of them, you'll see what I mean.

JAS

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"
<html>
<head>
<title>Test</title>
<script type="text/javascript">

function fakeKeyPress(elementID){
var thisTarget = document.getElementById(elementID);
thisTarget.focus();
if( window.KeyEvent ) {
var evObj = document.createEvent('KeyEvents');
evObj.initKeyEvent( 'keyup', true, true, window, false, false, false, false, 0x50, 0 );
} else {
var evObj = document.createEvent('UIEvents');
evObj.initUIEvent( 'keyup', true, true, window, 1 );
evObj.keyCode = 0x50;
}
thisTarget.dispatchEvent(evObj);
}
</script>
</head>
<body>
<textarea rows=2 cols=20 id="ta"></textarea>
<br>
<br>
<input type="button" value="fake P" onclick="fakeKeyPress('ta');" />
</body>
<html>
 
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Some progress. A slight change (see below) to the initKeyEvent call has it working in FF. No luck yet with IE or Opera.

JAS

function fakeKeyPress(elementID, thisKeyCode){
var thisTarget = document.getElementById(elementID);
thisTarget.focus();
if( window.KeyEvent ) {
var evObj = document.createEvent('KeyEvents');
evObj.initKeyEvent( 'keypress', true, true, window, false, false, true, false, 0, thisKeyCode );
} else {
var evObj = document.createEvent('UIEvents');
evObj.initUIEvent( 'keypress', true, true, window, 1 );
evObj.keyCode = 0x50;
}
thisTarget.dispatchEvent(evObj);
}
 
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