<html>
<head>
<title>Add/Remove Event Handlers Example</title>
<script type="text/javascript">
// addEventListener 是JS自带函数
// attachEvent 是JS自带函数
var EventUtil = new Object;
EventUtil.addEventHandler = function (oTarget, sEventType, fnHandler) {
if (oTarget.addEventListener) { // 如果还没有绑定click事件，则进行绑定。页面载入时候会执行这里。
oTarget.addEventListener(sEventType, fnHandler, false);
} else if (oTarget.attachEvent) { // 查看绑定了什么事件
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;
}
};
// 最后起作用的函数
function handleClick() {
alert("Click!\nd");
var oDiv = document.getElementById("div1");
// EventUtil.removeEventHandler(oDiv, "click", handleClick);
}
// 绑定DIV与触发事件，以及函数体
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"><font size="30" color="white">sss</font></div>
</body>
</html> |
发表于 2014-11-4 16:29:51