JS封装兼容性添加、删除事件的函数，一个JAvaScript的教程例子。
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>事件练习：封装兼容性添加、删除事件的函数</title>
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pre{color:green;padding:10px 15px;background:#f0f0f0;border:1px dotted #333;font:12px/1.5 Courier New;}
span{color:#999;}
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<script type="text/javascript">
var EventUtil = {
addHandler: function (oElement, sEvent, fnHandler) {
oElement.addEventListener ? oElement.addEventListener(sEvent, fnHandler, false) : oElement.attachEvent("on" + sEvent, fnHandler)
},
removeHandler: function (oElement, sEvent, fnHandler) {
oElement.removeEventListener ? oElement.removeEventListener(sEvent, fnHandler, false) : oElement.detachEvent("on" + sEvent, fnHandler)
},
addLoadHandler: function (fnHandler) {
this.addHandler(window, "load", fnHandler)
}
};
EventUtil.addLoadHandler(function () {
var aBtn = document.getElementsByTagName("input");
//为第一个按钮添加绑定事件
EventUtil.addHandler(aBtn[1], "click", function () {
EventUtil.addHandler(aBtn[0], "click", fnHandler);
aBtn[0].value = "我可以点击了"
});
//解除第一个按钮的绑定事件
EventUtil.addHandler(aBtn[2], "click", function () {
EventUtil.removeHandler(aBtn[0], "click", fnHandler);
aBtn[0].value = "毫无用处的按钮"
});
//事件处理函数
function fnHandler ()
{
alert("事件绑定成功！")
}
})
</script>
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<pre>
<script type="text/javascript">
var EventUtil = {
addHandler: function (oElement, sEvent, fnHandler) {
oElement.addEventListener ? oElement.addEventListener(sEvent, fnHandler, false) : oElement.attachEvent("on" + sEvent, fnHandler)
},
removeHandler: function (oElement, sEvent, fnHandler) {
oElement.removeEventListener ? oElement.removeEventListener(sEvent, fnHandler, false) : oElement.detachEvent("on" + sEvent, fnHandler)
},
addLoadHandler: function (fnHandler) {
this.addHandler(window, "load", fnHandler)
}
}
</script>
</pre>
<center><input type="button" value="毫无用处的按钮"> <input type="button" value="绑定click"> <input type="button" value="解除绑定"></center>
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