js无限级折叠菜单精简版_导航菜单

<meta charset="utf-8"> <title>无限级折叠菜单 1.01 JS版</title> <meta name="keywords" content="hj1227 原创无限级折叠菜单 1.01js版"> <meta name="description" content="hj1227 原创无限级折叠菜单 1.01js版"> <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; } #menu h3 { font-size:12px; } #menu ul { background:url("http://demo.jb51.net/js/2011/caidan/ul-bg.gif") repeat-y 5px 0px; overflow:hidden; } #menu ul li { padding:5px 0 2px 15px; background:url("http://demo.jb51.net/js/2011/caidan/tree-ul-li.gif") no-repeat 5px -32px; } #menu ul li ul {display:none;} #menu ul li em { cursor:pointer; display:inline-block; width:15px; float:left; height:15px; margin-left:-14px; background:url("http://demo.jb51.net/js/2011/caidan/tree-ul-li.gif") no-repeat -32px 2px; } #menu ul li em.off { background-position: -17px -18px; } #menu ul li#end { background-color:#FFF; } #menu ul.off { display:block; } --> </style> <div id="menu"> <h3>无限级折叠菜单 1.0.1 JS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];){ em.onclick = function(){ //onmouseover var ul = this.nextSibling; if(!ul){return false;} ul = ul.nextSibling; if(!ul){return false;} if(e.tag != 'a'){ ul = ul.nextSibling; if(!ul){return false;} } //a 标签控制 隐藏或删除该行 for(var _li=this.parentNode.parentNode.childNodes,n=-1,li;li=_li[++n];){ if(li.tagName=="LI"){ for(var _ul=li.childNodes,t=-1,$ul;$ul=_ul[++t];){ switch($ul.tagName){ case "UL": $ul.className = $ul!=ul?"" : ul.className?"":"off"; break; case "EM": $ul.className = $ul!=this?"" : this.className?"":"off"; break; } } } } } } })({id:'menu',tag:'em'}); </script>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

在线演示 http://demo.jb51.net/js/2011/caidan/index.htm