js实现的四级左侧网站分类菜单实例

时间：2021-05-26

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:///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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