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20161024script练习水平菜单.html
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20161024script练习水平菜单.html
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<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<style>
* {
padding: 0;
margin: 0;
}
a {
text-decoration: none;
}
ul, ol {
list-style: none;
}
/*#menu{*/
/*overflow: hidden;*/
/*}*/
div{
height:100px;
width:625px;
}
#menu .main-menu li{
height: 30px;
width: 200px;
background-color: black;
float: left;
text-align: center;
line-height: 30px;
margin-right: 8px;
/*overflow: hidden;*/
}
#menu .main-menu a {
color: #ffffff;
height: 100%;
width: 100%;
display: block;
/*overflow: hidden;*/
}
/*#menu .submenu {*/
/*display: none;*/
/*}*/
#menu .submenu li {
height: 20px;
width: 200px;
display: block;
background-color: #999999;
text-indent: 5px;
line-height: 20px;
border-bottom: 1px dashed #0f0f00;
}
#menu .submenu a {
color: darkblue;
}
</style>
<body>
<div >
<ul id="menu">
<li class="main-menu">
<a href="#"> link 1</a>
<ul class="submenu">
<li><a href="#">sublink1</a></li>
<li><a href="#">sublink2</a></li>
<li><a href="#">sublink3</a></li>
</ul>
</li>
<li class="main-menu">
<a href="#">link 2</a>
<ul class="submenu">
<li><a href="#">sublink1</a></li>
<li><a href="#">sublink2</a></li>
<li><a href="#">sublink3</a></li>
</ul>
</li>
<li class="main-menu">
<a href="#">link 3</a>
<ul class="submenu">
<li><a href="#">sublink1</a></li>
<li><a href="#">sublink2</a></li>
<li><a href="#">sublink3</a></li>
</ul>
</li>
</ul>
</div>
<script>
var oUl = document.getElementById("menu");
var aLi = oUl.getElementsByTagName("li");
for (var i = 0; i < aLi.length; i++) {
if (aLi[i].className == "main-menu") {
aLi[i].onmouseover = function () {
var oSubMenu = this.getElementsByTagName("ul")[0];
oSubMenu.style.display = 'block';
};
aLi[i].onmouseout = function () {
var oSubMenu = this.getElementsByTagName("ul")[0];
oSubMenu.style.display = 'none';
}
}
}
</script>
</body>
</html>