火狐不支持DOM2級事件處理程序嗎？
為什么我寫的程序沒反應(yīng)？
<!doctype?html>
<html>
<head>
????<meta?charset="UTF-8">
?<title>Document</title>
?<style>
??*{margin:0;padding:0;}
?????.head{font-size:12px;padding:6px?0?0?10px;}
?????#login_box{width:300px;height:150px;background:#eee;
?????border:1px?solid?#ccc;position:absolute;left:50%;top:50%;margin-left:-150px;margin-top:-75px;display:none;}
?????#login_box?p{height:20px;border-bottom:1px?solid?#ccc;font-size:12px;padding:6px?0?0?5px;font-weight:bold;}
?????#close{width:14px;height:14px;background:url(close.png)?no-repeat;position:absolute;right:4px;top:6px;}
?</style>
?<script?type="text/javascript">
??????window.onload=function(){
???????var?login_btn=document.getElementById('login'),
???????????login_box=document.getElementById('login_box'),
???????????close=document.getElementById('close');
???????//?封裝添加事件監(jiān)聽程序
????????function?addEvent(ele,type,hander){
???????????//?執(zhí)行代碼
???????????ele.addEventListener(type,hander,false);
???????}
????????//?顯示登錄層函數(shù)
???????function?showLogin(){
????????//?執(zhí)行代碼
???login_box.style.display='block';
????????}
????????
???}
????????//點(diǎn)擊登錄按鈕顯示登錄層?
??addEvent(login_btn,'click',showLogin);
????????
??????
?</script>
</head>
<body>
?<div>親，您好！<input?type="button"?value="登?錄"?id="login"></div>
?<div?id="login_box">
??<p>用戶登錄</p><span?id="close"></span>
?</div>
</body>
</html>
2016-03-16
//點(diǎn)擊登錄按鈕顯示登錄層?
??addEvent(login_btn,'click',showLogin);
位置不對，括號里面的參數(shù)是window.onload=function(){}的局部變量。
這個要放在window.onload=function(){
//點(diǎn)擊登錄按鈕顯示登錄層?
??addEvent(login_btn,'click',showLogin);
}
2016-03-16
樓上說的對，執(zhí)行函數(shù)要放在window.onload=function(){}內(nèi)部才行