谷歌浏览器可以弹出来 ie就弹不出来
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>事件流</title>
</head>
<body>
<div id="box">
<input type="button" value ="按钮" id="btn" onclick="showMes()">
<input type="button" value="按钮2" id="btn2" />
<input type="button" value="按钮3" id="btn3" />
</div>
<script type="text/javascript">
function showMes(){
alert("hello");
}
var btn2=document.getElementById("btn2");
var btn3=document.getElementById("btn3");
btn2.onclick=function(){
alert("dom0级添加事件");
}
btn2.onclick=null;
//dom2级事件
/* btn3.addEventListener("click",showMes,false);
btn3.addEventListener("click",function(){
alert(this.value);
},false);
//删除事件
// btn3.removeEventListener("click",showMes,false);
btn3.attachEvent("onclick",showMes);
//btn3.detachEvent("onclick",showMes);*/
var eventUtil={
//添加句柄
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;
}
},
//删除句柄
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;
}
}
}
eventUtil.addHandler(btn3,"click",showMes);
eventUtil.removeHandler(btn3,"click",showMes);
</script>
</body>
</html>
一颗猫屎咖啡1回答
-
Render_
附上源码啊
随时随地看视频慕课网APP
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