JS实现无限级网页折叠菜单(类似树形菜单)

<html>
<head>
<title>无限级折叠菜单JS版</title>
<style>
<!--
body,ul,h3 {margin:0px; padding:0px;}
li {list-style-type:none;}
body{
 font-size:12px;
 color:#333;
 font-family: Simsun;
 line-height:15px;
 }
a{text-decoration:none;color:#004285;border:none;}
a:hover{text-decoration:none;color:#C33;}
#menu {
 width:260px;
 margin:50px auto;
 padding:10px;
 border:#EEE 1px solid;
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 #menu h3 {
 font-size:12px;
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 #menu ul {
 background:url("images/ul-bg.gif") repeat-y 5px 0px; overflow:hidden;
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 #menu ul li {
 padding:5px 0 2px 15px;
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 #menu ul li ul {display:none;}
 #menu ul li em {
 cursor:pointer;
 display:inline-block;
 width:15px;
 float:left;
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 background:url("images/tree-ul-li.gif") no-repeat -32px 2px;
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 #menu ul li#end {
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 display:block;
 }
-->
</style>
</head>
<body>
<div id="menu">
 <h3>无限级折叠菜单JavaScript版</h3>
 <ul>
 <li><em></em><a href=‘javascript:void(0);‘>菜单_1_1</a>
 <ul>
  <li><em></em><a href=‘javascript:void(0);‘>菜单_2_1</a>
  <ul>
  <li><em></em><a href=‘javascript:void(0);‘>菜单_3_1</a>
  <ul>
   <li><em></em><a href=‘javascript:void(0);‘>菜单_4_1</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
   <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_4_2</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
  </ul>
  </li>
  <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_3_2</a>
  <ul>
   <li><em></em><a href=‘javascript:void(0);‘>菜单_4_1</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
   <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_4_2</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
  </ul>
  </li>
  </ul>
  </li>
  <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_2_2</a>
  <ul>
  <li><em></em><a href=‘javascript:void(0);‘>菜单_3_1</a>
  <ul>
   <li><em></em><a href=‘javascript:void(0);‘>菜单_4_1</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
   <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_4_2</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
  </ul>
  </li>
  <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_3_2</a>
  <ul>
   <li><em></em><a href=‘javascript:void(0);‘>菜单_4_1</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
   <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_4_2</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
  </ul>
  </li>
  </ul>
  </li>
 </ul>
 </li>
 <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_1_2</a>
 <ul>
  <li><em></em><a href=‘javascript:void(0);‘>菜单_2_1</a>
  <ul>
  <li><em></em><a href=‘javascript:void(0);‘>菜单_3_1</a>
  <ul>
   <li><em></em><a href=‘javascript:void(0);‘>菜单_4_1</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
   <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_4_2</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
  </ul>
  </li>
  <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_3_2</a>
  <ul>
   <li><em></em><a href=‘javascript:void(0);‘>菜单_4_1</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
   <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_4_2</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
  </ul>
  </li>
  </ul>
  </li>
  <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_2_2</a>
  <ul>
  <li><em></em><a href=‘javascript:void(0);‘>菜单_3_1</a>
  <ul>
   <li><em></em><a href=‘javascript:void(0);‘>菜单_4_1</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
   <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_4_2</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
  </ul>
  </li>
  <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_3_2</a>
  <ul>
   <li><em></em><a href=‘javascript:void(0);‘>菜单_4_1</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
   <li id=‘end‘><em></em><a href=‘javascript:void(0);‘>菜单_4_2</a>
   <ul>
   <li><a href=‘javascript:void(0);‘>菜单_5_1</a></li>
   <li id=‘end‘><a href=‘javascript:void(0);‘>菜单_5_2</a></li>
   </ul>
   </li>
  </ul>
  </li>
  </ul>
  </li>
 </ul>
 </li>
 </ul>
</div>
<script type="text/javascript">
(function(e){
 for(var _obj=document.getElementById(e.id).getElementsByTagName(e.tag),i=-1,em;em=_obj[++i];){
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})({id:‘menu‘,tag:‘em‘});
</script>
</body>
</html>
时间： 2024-10-24 23:01:51

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