professional-javascript-09-AddRemoveEventHandlersExample.htm / htm
<html>
<head>
<title>Add/Remove Event Handlers Example</title>
<script type="text/javascript">
var EventUtil = new Object;
EventUtil.addEventHandler = function (oTarget, sEventType, fnHandler) {
if (oTarget.addEventListener) {
oTarget.addEventListener(sEventType, fnHandler, false);
} else if (oTarget.attachEvent) {
oTarget.attachEvent("on" + sEventType, fnHandler);
} else {
oTarget["on" + sEventType] = fnHandler;
}
};
EventUtil.removeEventHandler = function (oTarget, sEventType, fnHandler) {
if (oTarget.removeEventListener) {
oTarget.removeEventListener(sEventType, fnHandler, false);
} else if (oTarget.detachEvent) {
oTarget.detachEvent("on" + sEventType, fnHandler);
} else {
oTarget["on" + sEventType] = null;
}
};
function handleClick() {
alert("Click!");
var oDiv = document.getElementById("div1");
EventUtil.removeEventHandler(oDiv, "click", handleClick);
}
window.onload = function() {
var oDiv = document.getElementById("div1");
EventUtil.addEventHandler(oDiv, "click", handleClick);
}
</script>
</head>
<body>
<div id="div1" style="background-color: red; width: 100px; height: 100px"></div>
</body>
</html>
(C) Æliens 20/2/2008
You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.
