总的来说思路比较简单，就是先获取节点，然后对节点进行相应的处理,下面是完整的页面代码：
原生js：
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <title>原生js tab</title> <style type="text/css"> .tab{ margin:10px auto; position:relative; width:300px; } ul,li{ list-style-type:none; padding:0; margin:0; font:13px/20px SimSun,arial; color:#333; text-align:center; } .tabTltle ul li{ float:left; position:relative; background:#fefefe; background:-webkit-gradient(linear,left top,left bottom, from(#fefefe), to(#ededed)); padding:7px 15px; border:1px #ddd solid; margin-right:-1px; cursor:pointer; } .tabTltle ul li.active{ background:#fff; font-weight: bold; } .clearfix{ } .clearfix:after{ display:block; clear:both; overflow:hidden; content:""; } .tabConn{ border:1px #eee solid; position:relative; height:100px } .tabConn div{ position:absolute; opacity:0; filter:alpha(opacity=0); padding:5px; text-align:center; width:100%; } .tabConn div.current{ opacity:1; filter:alpha(opacity=100); } </style> </head> <body> <div> <div> <ul> <li>标题一</li> <li>标题二</li> <li>标题三</li> <li>标题四</li> </ul> </div> <div> <div>aaaaaaaaaaaaaaa</div> <div>bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb</div> <div>cccccccccccccccccccccccccccccccc</div> <div>ddddddddddddddddddddddddddddd</div> </div> </div> <script type="text/javascript"> (function(){ var tab = document.getElementById("tab"); var tabList = tab.getElementsByTagName("div")[0].getElementsByTagName("li"); var tabConn = tab.getElementsByTagName("div")[1].getElementsByTagName("div");for(var i=0;i<tabList.length;i++){ tabList[i].index = i; tabList[i].onclick = function(){ showConn(this.index); } } function showConn(_index){ var index = _index;for(var j=0;j<tabList.length;j++){ tabList[j].className = ""; tabConn[j].className = ""; tabConn[j].style.opacity=0; } tabConn[index].className="current"; tabList[index].className="active"; } })(); </script> </body> </html>
下面我们来看一下jQuery写的（css共用,需要引进jQuery库）：
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <title>jQuery tab</title> <script type="text/javascript" src="https://www.jb51.net/js/jquery-1.8.1.min.js"></script> <style type="text/css"> .tab{ margin:10px auto; position:relative; width:300px; } ul,li{ list-style-type:none; padding:0; margin:0; font:13px/20px SimSun,arial; color:#333; text-align:center; } .tabTltle ul li{ float:left; position:relative; background:#fefefe; background:-webkit-gradient(linear,left top,left bottom, from(#fefefe), to(#ededed)); padding:7px 15px; border:1px #ddd solid; margin-right:-1px; cursor:pointer; } .tabTltle ul li.active{ background:#fff; font-weight: bold; } .clearfix{ } .clearfix:after{ display:block; clear:both; overflow:hidden; content:""; } .tabConn{ border:1px #eee solid; position:relative; height:100px } .tabConn div{ position:absolute; opacity:0; filter:alpha(opacity=0); padding:5px; text-align:center; width:100%; } .tabConn div.current{ opacity:1; filter:alpha(opacity=100); } </style> </head> <body> <h3>jQuery写的选项卡:</h3> <div> <div> <ul> <li>标题一</li> <li>标题二</li> <li>标题三</li> <li>标题四</li> </ul> </div> <div> <div>aaaaaaaaaaaaaaa</div> <div>bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb</div> <div>cccccccccccccccccccccccccccccccc</div> <div>ddddddddddddddddddddddddddddd</div> </div> </div> <script type="text/javascript"> $(document).ready(function(){ var $tabTitle = $('.tab-title').find('li'); var $tabList = $('.tab-conn > div'); $tabTitle.click(function(){ $tabTitle.each(function(){ $tabTitle.removeClass('active'); }); var index = $tabTitle.index(this); $(this).addClass('active'); $tabList.eq(index).addClass('current').siblings().removeClass('current'); }); }); </script> </body> </html>
是不是简单了好多！