詳解javascript跨瀏覽器事件處理程序_javascript技巧
- WBOY原創
- 2016-05-16 15:08:021277瀏覽
本文為大家分享了javascript跨瀏覽器事件處理機制，供大家參考，具體內容如下
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>跨浏览器的事件处理程序</title>
</head>
<body>
<input type="button" value="click me" id="myBtn"/>
<input type="button" value="解除" id="unlisten"/>
<script>
function $(id){
return document.getElementById(id);
}
var EventUtil={
fnCount:0
,fnData:{}
,addHandler:function(element,type,handler){
this.fnCount++;
handler.fid = this.fnCount;
var _fn = handler;
handler = function(){
_fn.call(element);
};
this.fnData[this.fnCount] = handler;
if(element.addEventListener){
element.addEventListener(type,handler,false);
} else if(element.attachEvent){
element.attachEvent("on"+type,handler);
} else {
element["on"+type]=handler;
}
}
,removeHandler:function(element,type,handler){
handler = this.fnData[handler.fid];
if(element.removeEventListener){
element.removeEventListener(type,handler,false);
}else if(element.detachEvent){
element.detachEvent("on"+type,handler);
}else{
element["on"+type]=null;
}
}
}
var btn=$("myBtn");
var unbtn = $('unlisten');
var bindFn1=function(){
alert(this.id);
};
var bindFn2=function(){
alert('2');
};
EventUtil.addHandler(btn,"click",bindFn1);
EventUtil.addHandler(btn,"click",bindFn2);
//EventUtil.removeHandler(btn,"click",bindFn1);
EventUtil.addHandler(unbtn,"click",function(){
EventUtil.removeHandler(btn,"click",bindFn1);
});
</script>
</body>
</html>
以上就是本文的全部內容，希望對大家的學習有所幫助。
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