仿淘宝首页分类列表效果实现代码_javascript技巧

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Untitled Document</title> <style type="text/css"> body{font-size:12px;position:relative;font-family:Verdana, Geneva, sans-serif;} a{color:blue;} ul{margin:0;padding:0;list-style:none;} #navigation{height:26px;} #navigation li{float:left;} #navigation li.show .content{display:block;} #navigation li a,#navigation li span{display:inline-block;border:solid 1px #fff;border-bottom:none;height:26px;padding:0 6px;line-height:20px;overflow:hidden} #navigation li a:hover,#navigation li.show a.index{background:#DBF3FE;border-color:#0a0;position:relative;top:0px;z-index:2;} #container{position:relative;width:800px;margin:50px;} #navigation li .content{position:absolute;left:0;top:26px;background:#DBF3FE;border:solid 1px #0a0;width:760px;padding:20px;display:none;} #navigation li .content ul li{margin-right:10px;float:none;display:inline;} #navigation li .content ul li a{border:none;} #navigation li .content ul li{width:120px;} #navigation li .content ul li h3{clear:both;text-align:left;} </style> <div id="container"> <ul id="navigation"> <li><span>拼音索引</span></li> <li> <a href="#" class="index">A</a> <div class="content"> <h3>阿里山</h3> <ul> <li><a href="#">阿里山</a></li> <li><a href="#">阿里山</a></li> <li><a href="#">阿里山</a></li> <li><a href="#">阿里山</a></li> <li><a href="#">阿里山</a></li> <li><a href="#">阿里山</a></li> </ul> <h3>阿里山</h3> <ul> <li><a href="#">阿里山</a></li> <li><a href="#">阿里山</a></li> <li><a href="#">阿里山</a></li> <li><a href="#">阿里山</a></li> </ul> </div> </li> <li> <a href="#" class="index">B</a> <div class="content"> <h3>棒棒糖</h3> <ul> <li><a href="#">棒棒糖</a></li> <li><a href="#">棒棒糖</a></li> <li><a href="#">棒棒糖</a></li> <li><a href="#">棒棒糖</a></li> <li><a href="#">棒棒糖</a></li> <li><a href="#">棒棒糖</a></li> </ul> <h3>棒棒糖</h3> <ul> <li><a href="#">棒棒糖</a></li> <li><a href="#">棒棒糖</a></li> <li><a href="#">棒棒糖</a></li> <li><a href="#">棒棒糖</a></li> </ul> </div> </li> <li> <a href="#" class="index">C</a><div class="content">C</div> </li> <li> <a href="#" class="index">D</a><div class="content">D</div> </li> <li> <a href="#" class="index">E</a><div class="content">E</div> </li> <li> <a href="#" class="index">F</a><div class="content">F</div> </li> <li> <a href="#" class="index">G</a><div class="content">G</div> </li> <li> <a href="#" class="index">H</a><div class="content">H</div> </li> <li> <a href="#" class="index">I</a><div class="content">I</div> </li> <li> <a href="#" class="index">J</a><div class="content">J</div> </li> <li> <a href="#" class="index">K</a><div class="content">K</div> </li> <li> <a href="#" class="index">L</a><div class="content">L</div> </li> <li> <a href="#" class="index">M</a><div class="content">M</div> </li> <li> <a href="#" class="index">N</a><div class="content">N</div> </li> <li> <a href="#" class="index">O</a><div class="content">O</div> </li> <li> <a href="#" class="index">P</a><div class="content">P</div> </li> <li> <a href="#" class="index">Q</a><div class="content">Q</div> </li> <li> <a href="#" class="index">R</a><div class="content">R</div> </li> <li> <a href="#" class="index">S[sh]</a><div class="content">S</div> </li> <li> <a href="#" class="index">T</a><div class="content">T</div> </li> <li> <a href="#" class="index">U</a><div class="content">U</div> </li> <li> <a href="#" class="index">V</a><div class="content">V</div> </li> <li> <a href="#" class="index">W</a><div class="content">W</div> </li> <li> <a href="#" class="index">X</a><div class="content">X</div> </li> <li> <a href="#" class="index">Y</a><div class="content">Y</div> </li> <li> <a href="#" class="index">Z[zh]</a><div class="content">Z</div> </li> </ul> </div> <script type="text/javascript"> function showAjaxContent(){ var obj=document.getElementById("navigation"); var liObj=obj.getElementsByTagName("li"); var length=liObj.length; var currentLiObj; for(var i=0;i<length;i++){ currentLiObj=liObj[i]; if(currentLiObj.parentNode!=obj){continue;} //然后循环添加事件 currentLiObj.onmouseover=function(){ if(this.className.indexOf("show")<0){ this.className+=" show"; } clearStyle(this); } currentLiObj.onmouseout=function(){ this.className=this.className.replace("show",""); clearStyle(this); } } function clearStyle(obj){ for(var i=0;i<length;i++){ currentLiObj=liObj[i]; if(obj!=currentLiObj){ currentLiObj.className=currentLiObj.className.replace("show",""); } } } } showAjaxContent(); </script>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]