效果图如下：
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html代码
<!DOCTYPE html><html><head><title>tab测试</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-" /><link href="css/tab.css" rel="stylesheet" type="text/css" /><script type="text/javascript" src="js/tab-min.js"></script></head><body><div id="tab"> <!-- tabHead --> <ul class="tab-nav"> <li><a href="javascript:void()">交易安全</a></li> <li><a href="javascript:void()">淘宝大学</a></li> <li><a href="javascript:void()">爱心</a></li> </ul> <!-- tabPanel--> <ul class="tab-bd"> <li></li> <li></li> <li></li> </ul></div><script type="text/javascript">tabPanel({"panel":"tab"});//panel为必填项，default、defalutStyle、hoverStyle为选填项</script></body></html>
js代码
function tabPanel(param){ var defaultIndex=param["default"]||,//设置显示的页面 panelobj=param["panel"],//设置tab容器 defalutClass=param["defalutStyle"]||"",//设置tab菜单项的普通样式 hoverClass=param["hoverStyle"]||"hover",//设置鼠标移到tab菜单项的样式 currentIndex=defaultIndex, menus=_$(panelobj).getElementsByTagName("ul")[].getElementsByTagName("li"), contents=_$(panelobj).getElementsByTagName("ul")[].getElementsByTagName("li"), menuNumber=menus.length, hidden="hidden"; for(var i=;i<menuNumber;i++){ _setClass(contents[],hoverClass); _setClass(contents[i],hidden); _setClass(menus[i],defalutClass); (function(i){ menus[i].onmouseover=function(){ var old=menus[currentIndex]; _setClass(old,defalutClass); _setClass(contents[currentIndex],hidden); var cur=menus[i]; _setClass(cur,hoverClass); currentIndex=i; _setClass(contents[i],""); }; })(i); } _setClass(menus[currentIndex],hoverClass); _setClass(contents[currentIndex],""); //便利函数 function _setClass(obj,className){obj.className=className} function _$(oid){return typeof(oid) == "string"?document.getElementById(oid):oid}}
css代码
#tab{border:px solid #ccc;}#tab .tab-bd{border-top:none;margin: auto;padding:px;text-align:left;height:px;position:relative}.tab-nav{margin: auto;padding:;background:#eee;height:px;}.tab-nav li{display:inline;list-style:none outside none;width:px;height:px;float:left;line-height:px;text-align:center;}.tab-nav li a{color:#;display:inline-block}.tab-nav li a:hover,.tab-nav li.hover a{text-decoration:none;background:#fff;color:#;display:block; }.hidden{display:none}
