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JavaScript encapsulates a tab effect source code sharing_javascript skills

WBOYOriginal: 2016-05-16 15:39:151052browse

The rendering is as follows:

html code

<!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 code

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"&#63;document.getElementById(oid):oid}
}

css code

#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}

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