帮我看看哪里错了
<body>
<input type="button" value="按钮" id="btn" onclick="showMessage()"/>
<input type="button" value="按钮2" id="btn2" />
<input type="button" value="按钮3" id="btn3" />
<script>
function showMessage(){
alert('hallo world');
}
var btn2=document.getElementById('btn2');
var btn3=document.getElementById('btn3');
var eventUtil={
addHandler:function(element,type,handler)
{
if(element.addEventListener)
{elemnet.addEventListener(type,handler,false);}
else if(element.attachEvent)
{element.attachEvent('on'+type,handler);}
else{element['on'+type]=handler;}
}
removeHandler:function(element,type,handler)
{
if(element.removeEventListener)
{elemnet.removeEventListener(type,handler,false);}
else if(element.detachEvent)
{element.detachEvent('on'+type,handler);}
else{element['on'+type]=null;}
}
}
eventUtil.addHandler(btn3,'click',showMessage);
</script>
</body>
未来的大牛级人物1回答
-
六道骸
var eventUtil={addHandler:function(element,type,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){ if(element.removeEventListener) {element.removeEventListener(type,handler,false);} else if(element.detachEvent) {element.detachEvent('on'+type,handler);} else{element['on'+type]=null;}}};
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相关分类
JavaScript