本文为大家分享了javascript跨浏览器事件处理机制,供大家参考,具体内容如下
<Meta charset="UTF-8">
跨浏览器的事件处理程序
function $(id){
return document.getElementById(id);
}
var EventUtil={
fnCount:0,fnData:{},addHandler:function(element,type,handler){
this.fnCount++;
handler.fid = this.fnCount;
var _fn = handler;
handler = function(){
_fn.call(element);
};
this.fnData[this.fnCount] = handler;
if(element.addEventListener){
element.addEventListener(type,handler,false);
} else if(element.attachEvent){
element.attachEvent("on"+type,handler);
} else {
element["on"+type]=handler;
}
},removeHandler:function(element,handler){
handler = this.fnData[handler.fid];
if(element.removeEventListener){
element.removeEventListener(type,false);
}else if(element.detachEvent){
element.detachEvent("on"+type,handler);
}else{
element["on"+type]=null;
}
}
}
var btn=$("myBtn");
var unbtn = $('unlisten');
var bindFn1=function(){
alert(this.id);
};
var bindFn2=function(){
alert('2');
};
EventUtil.addHandler(btn,"click",bindFn1);
EventUtil.addHandler(btn,bindFn2);
//EventUtil.removeHandler(btn,bindFn1);
EventUtil.addHandler(unbtn,function(){
EventUtil.removeHandler(btn,bindFn1);
});