日期:2014-05-16 浏览次数:20620 次
<!DOCTYPE HTML>
<html>
<head>
<title>soul42</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" >
<STYLE type="text/css">
* { margin:0; padding:0;}
#box{width:30px;margin:200px auto 0 ;display:block;position:relative}
ul{position:absolute;top:-202px;left:0;width:200px;}
li{height:20px;background:orange;margin-bottom:1px}
</STYLE>
</head>
<body>
<div id="box">sd
<ul style="display:none" id="list">
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
</ul>
</div>
<script type="text/javascript">
var $ = function(id){return document.getElementById(id)}
$("box").onmouseover = function(){
$("list").style.display = "block";
}
$("box").onmouseout = function(){
$("list").style.display = "none";
}
</script>
</body>
</html>
<!DOCTYPE HTML>
<html>
<head>
<title>soul42</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" >
<STYLE type="text/css">
* { margin:0; padding:0;}
#box{width:30px;margin:200px auto 0 ;display:block;position:relative;}
ul{position:absolute;top:-202px;left:0;width:200px;}
li{height:20px;background:orange;margin-bottom:1px}
</STYLE>
</head>
<body>
<div id="box">sd
<ul style="display:none" id="list">
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
<li>23</li>
</ul>
</div>
<script type="text/javascript">
var tid = null;
var $ = function(id){return document.getElementById(id)}
$("box").onmouseover = function(){
$("list").style.display = "block";
}
$("box").onmouseout = function(){
var obj = event.srcElement;
if(tid!=null) clearTimeout(tid);
tid = setTimeout(function(){$("list").style.display = "none"}, 1500);
}
$("list").onmouseover = function(){
if(tid!=null) clearTimeout(tid);
}
</script>
</body>
</html>
------解决方案--------------------
1.改css把div和ul拼一起盖掉空白
2.给document加click关闭或者ul里加个关闭按钮