这篇文章主要介绍了js实现的四级左侧网站分类菜单,实例分析了javascript操作页面元素实现tab切换的相关技巧,需要的朋友可以参考下
本文实例讲述了js实现的四级左侧网站分类菜单。分享给大家供大家参考。具体实现方法如下:
- <!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" xml:lang="en" lang="en">
- <head>
- <meta http-equiv="Content-Type" content="text/html;
- charset=iso-8859-1"/>
- <script src="http://www.google-analytics.com/urchin.js"
- type="text/javascript">
- </script>
- <script type="text/javascript">
- _uacct = "UA-152060-1";
- urchinTracker();
- </script>
- <title>demo</title>
- <style type="text/css">
- <!--
- body {
- font-family: Arial, Helvetica, sans-serif;
- font-size: 11px;
- }
- #nav, #nav ul {
- list-style: none;
- background: #F9F9F9;
- font-weight: bold;
- padding: 0px;
- margin: 0px;
- border: solid 1px #CCCCCC;
- border-bottom: 0px;
- width: 150px;
- text-align: left;
- }
- #nav ul ul{
- border: solid 1px #CCCCCC;
- border-bottom: 0px;
- }
- #nav a {
- display: block;
- width: 150px;
- w/idth: 140px;
- color: #333333;
- text-decoration: none;
- text-align: center;
- border-bottom: solid 1px #CCCCCC;
- text-align: left;
- padding-left: 10px;
- }
- #nav a:hover{
- color: #336666;
- }
- #nav a.selected{
- background: url(/images/bb_expand.gif) no-repeat right 50%;
- }
- #nav li {
- line-height: 22px;
- position: relative;
- }
- #nav li ul {
- position: absolute;
- left: -999em;
- width: 150px;
- font-weight: normal;
- margin: 0px;
- padding: 0px;
- }
- #nav li li {
- width: 150px;
- }
- #nav li ul a {
- width: 150px;
- w/idth: 126px;
- padding: 0px 12px;
- line-height: 22px;
- text-align: left;
- }
- #nav li ul ul {
- margin: 0px 0 0 150px;
- }
- #nav li:hover ul ul,#nav li.sfhover ul ul,#nav li:hover ul ul ul{
- left: -999em;
- }
- #nav li:hover ul, #nav li li:hover ul,#nav li.sfhover ul, #nav li li.sfhover ul,#nav li li li:hover ul
- {
- left: auto;
- }
- #nav li:hover ul,#nav li.sfhover ul{
- left: 150px;
- top: 0px;
- }
- #nav li:hover, #nav li.sfhover {
- background: #F5E3C0;
- }
- * html #nav li {
- float: left;
- height: 1%;
- }
- * html #nav li a {
- height: 1%;
- }
- -->
- </style>
- <script type="text/javascript">
- <!--//--><![CDATA[//><!--
- sfHover = function() {
- var sfEls = document.getElementById("nav").getElementsByTagName("LI");
- for (var i=0; i<sfEls.length; i++) {
- sfEls[i].onmouseover=function() {
- this.className+=" sfhover";
- }
- sfEls[i].onmouseout=function() {
- this.className=this.className.replace(new RegExp(" sfhover//b"),"");
- }
- }
- }
- if (window.attachEvent) window.attachEvent("onload", sfHover);
- //--><!]]>
- </script>
- </head>
- <body>
- <p><a href="javascript:history.back()">Back</a></p>
- <ul id="nav">
- <li><a href="">Home</a></li>
- <li><a href="/aboutme.html">About Me</a></li>
- <li><a class="selected" href="/tutorials.html">Tutorials</a>
- <ul>
- <li><a href="#">Sub Menu 31</a></li>
- <li><a class="selected" href="#">Sub Menu 32</a>
- <ul>
- <li><a class="selected"href="#">Sub Menu 321</a><ul>
- <li><a href="#">Sub Menu 321</a></li>
- </ul></li>
- <li><a href="#">Sub Menu 322</a></li>
- <li><a href="#">Sub Menu 323</a></li>
- <li><a class="selected"href="#">Sub Menu 324</a><ul>
- <li><a href="#">Sub Menu 321</a></li>
- <li><a href="#">Sub Menu 322</a></li>
- <li><a href="#">Sub Menu 323</a></li>
- <li><a href="#">Sub Menu 324</a></li>
- </ul></li>
- </ul>
- </li>
- <li><a href="#">Sub Menu 33</a></li>
- <li><a href="#">Sub Menu 34</a></li>
- </ul>
- </li>
- <li><a class="selected" href="/gallery/gallery.html">Gallery</a>
- <ul>
- <li><a href="#">Sub Menu 41</a></li>
- <li><a class="selected" href="#">Sub Menu 42</a>
- <ul>
- <li><a href="#">Sub Menu 421</a></li>
- <li><a href="#">Sub Menu 422</a></li>
- <li><a href="#">Sub Menu 423</a></li>
- <li><a href="#">Sub Menu 424</a></li>
- </ul>
- </li>
- <li><a href="#">Sub Menu 43</a></li>
- <li><a href="#">Sub Menu 44</a></li>
- </ul>
- </li>
- <li><a href="#">Contact Me</a></li>
- </ul>
- </body>
- </html>
希望本文所述对大家的javascript程序设计有所帮助。
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