JavaScript 下拉菜单实现代码- Javascript

当前位置: 首页 > 图文教程 > 网络编程 > Javascript > JavaScript 下拉菜单实现代码

Javascript: form中限制文本字节数js代码; use jscript with List Proxy Server Information; use jscript List Installed Software; List Installed Software Features; List Information About the Binary Files Used by an Application; List the Codec Files on a Computer; List the UTC Time on a Computer; List Installed Hot Fixes; excel操作之Add Data to a Spreadsheet Cell; Add Formatted Data to a Spreadsheet; Apply an AutoFormat to an Excel Spreadsheet; JavaScript语法着色引擎（demo及打包文件下载）; 类之Prototype.js学习; 一款JavaScript压缩工具：X2JSCompactor; iis6+javascript Add an Extension File; jscript之Open an Excel Spreadsheet; jscript之Read an Excel Spreadsheet; jscript之List Excel Color Values; 去除图像或链接黑眼圈的两种方法总结; Add a Formatted Table to a Word Document

No. « ‹ 70 71 72 73 › »

技术文章搜索

关键字

Javascript 中的 JavaScript 下拉菜单实现代码

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-09-12 浏览: 384 ::

收藏到网摘: n/a

window.event.srcElement 得到事件源对象用js获取元素属性的代码

利用css+js实现的下拉菜单。通过getElementsByTagName获取ul,隐藏显示。

点击运行可以看到效果:

<!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 runat="server">
<title>JavaScript下拉菜单</title>
<style type="text/css">
* {
padding:0;
margin:0;
}
body {
font-family:verdana, sans-serif;
font-size:small;
}
#navigation, #navigation li ul {
list-style-type:none;
}
#navigation {
margin:20px;
}
#navigation li {
float:left;
text-align:center;
position:relative;
}
#navigation li a:link, #navigation li a:visited {
display:block;
text-decoration:none;
color:#000;
width:120px;
height:40px;
line-height:40px;
border:1px solid #fff;
border-width:1px 1px 0 0;
background:#c5dbf2;
padding-left:10px;
}
#navigation li a:hover {
color:#fff;
background:#2687eb;
}
#navigation li ul li a:hover {
color:#fff;
background:#6b839c;
}
#navigation li ul {
display:none;
position:absolute;
top:40px;
left:0;
margin-top:1px;
width:120px;
}
#navigation li ul li ul {
display:none;
position:absolute;
top:0px;
left:130px;
margin-top:0;
margin-left:1px;
width:120px;
}
</style>
<script type="text/javascript">
function displaySubMenu(li) {
var subMenu = li.getElementsByTagName("ul")[0];
subMenu.style.display = "block";
}
function hideSubMenu(li) {
var subMenu = li.getElementsByTagName("ul")[0];
subMenu.style.display = "none";
}
</script>
</head>
<body>
<ul id="navigation">
<li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
<a href="#">栏目1</a>
<ul>
<li><a href="#">栏目1->菜单1</a></li>
<li><a href="#">栏目1->菜单2</a></li>
<li><a href="#">栏目1->菜单3</a></li>
<li><a href="#">栏目1->菜单4</a></li>
</ul>
</li>
<li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
<a href="#">栏目2</a>
<ul>
<li><a href="#">栏目2->菜单1</a></li>
<li><a href="#">栏目2->菜单2</a></li>
<li><a href="#">栏目2->菜单3</a></li>
<li><a href="#">栏目2->菜单4</a></li>
<li><a href="#">栏目2->菜单5</a></li>
</ul>
</li>
<li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
<a href="#">栏目3</a>
<ul>
<li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
<a href="#">栏目3->菜单1</a>
<ul>
<li><a href="#">菜单1->子菜单1</a></li>
<li><a href="#">菜单1->子菜单2</a></li>
<li><a href="#">菜单1->子菜单3</a></li>
<li><a href="#">菜单1->子菜单4</a></li>
</ul>
</li>
<li><a href="#">栏目3->菜单2</a></li>
<li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
<a href="#">栏目3->菜单3</a>
<ul>
<li><a href="#">菜单3->子菜单1</a></li>
<li><a href="#">菜单3->子菜单2</a></li>
<li><a href="#">菜单3->子菜单3</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</body>
</html>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

window.event.srcElement 得到事件源对象用js获取元素属性的代码

Javascript 中的 JavaScript 下拉菜单实现代码

评论 (0) All