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/*
JavaScript Application Cookbook
By Jerry Bradenbaugh
Publisher: O'Reilly
Series: Cookbooks
ISBN: 1-56592-577-7
*/
<HTML>
<HEAD>
<TITLE>Mouse and key event (IE)</TITLE>
<SCRIPT LANGUAGE="JavaScript1.1">
// events.js
var keys = '';
var change = true;
var x1, x2, y1, y2;
// This function enables and disables the
// onmousemove event handler of both
// Navigator and MSIE
function enableEffects(ev) {
if(change) {
if(document.layers) {
x1 = ev.screenX;
y1 = ev.screenY;
document.captureEvents(Event.MOUSEMOVE);
}
else {
x1 = event.screenX;
y1 = event.screenY;
}
document.onmousemove = showXY;
}
else {
if (document.layers) {
x2 = ev.screenX;
y2 = ev.screenY;
document.releaseEvents(Event.MOUSEMOVE);
}
else {
x2 = event.screenX;
y2 = event.screenY;
document.onmousemove = null;
}
window.status = 'Start: (' + x1 + ',' + y1 +
') End: (' + x2 + ',' + y2 + ') Distance: ' +
(Math.abs((x2 - x1) + (y2 - y1))) + ' pixels';
}
change = !change;
}
// This function alerts a string of keys that the user has typed
function showKeys() {
if (keys != '') {
alert('You have typed: ' + keys);
window.status = keys = '';
}
else { alert('You have to type some keys first.'); }
}
// This function displays the keys pressed in the status bar
function showXY(ev) {
if (document.all) { ev = event; }
window.status = 'X: ' + ev.screenX + ' Y: ' + ev.screenY;
}
// This function captures the keys pressed one at a time
function keepKeys(ev) {
if (document.layers) {
keys += String.fromCharCode(ev.which);
window.status = 'Key pressed: ' + String.fromCharCode(ev.which);
}
else {
keys += String.fromCharCode(event.keyCode);
window.status = 'Key pressed: ' + String.fromCharCode(event.keyCode);
}
}
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript1.1">
<!--
document.onclick = enableEffects;
document.onkeypress = keepKeys;
//-->
</SCRIPT>
</HEAD>
<BODY BGCLOR=WHITE>
Click your mouse button, then move it around, click again to stop tracking.
<BR><BR><BR><BR><BR><BR>
Now type some keys.... any keys. Then press <B>Show Keys</B><BR>
<FORM><INPUT TYPE=BUTTON VALUE="Show Keys" onClick="showKeys();"></FORM>
</BODY>
</HTML>
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