Home Web Front-end JS Tutorial JavaScript实现通用tab选项卡

JavaScript实现通用tab选项卡

Jun 01, 2016 am 09:54 AM
js Tab

选项卡在大量的网站都有应用,虽然形式各有不同,但是索要达成的目的都是一样的,一般都是为了进行分类或者节省网页空间只用,算是一件利器,下面就是一个选项卡的代码实例,通用性很强,下面就和大家分享一下。

代码实例如下:

<code class="html">


<meta charset=" utf-8">
<meta name="author" content="http://www.manongjc.com/">
<title>js实现的可以通用的选项卡代码实例</title>
<style type="text/css">
body {text-align:center;}
.tab1, .tab2 
{
width:350px;
margin:0 5px;
background:#CC9933;
opacity:0.5;
border-radius:5px 5px 5px 5px;
box-shadow:#CCC 4px 4px 4px;
text-align:left;
float:left;
display:inline;
}
.name 
{
list-style:none;
overflow:hidden;
}
.name li 
{
width:90px;
font:bold 16px/30px Verdana, Geneva, sans-serif;
background:#669900;
text-align:center;
border-radius:5px 5px 5px;
margin-right:5px;
float:left;
display:inline;
cursor:pointer;
}
li.selected{background:#FF9900;}
.content li 
{
height:500px;
display:none;
}
</style>
<script type="text/javascript">
/** 
* 事件处理通用函数
*/
var EventUtil={
getEvent:function(event)
{
return event ? event : window.event;
},
getTarget:function(event)
{
return event.target||event.srcElement;
},
addHandler:function(element,type,handler)
{
if(element.addEventListener)
{
element.addEventListener(type,handler,false);
}
else if(element.attachEvent)
{
element.attachEvent("on"+type,handler);
}
else
{
element["on"+type] = handler;
} 
}
};
/**
* 选项卡通用函数
*/
// 传入参数inClassName设定为绑定的选项卡类名,参数triggerType设定为触发切换的类型
function tabSwitch(inClassName,triggerType){
//取得全部选项卡区域
if(document.querySelectorAll)
{
var tabs=document.querySelectorAll("."+inClassName);
}
else
{
var divs=document.getElementsByTagName("div");
var tabs = new Array();
for(var k=0,lenDiv=divs.length;k<lenDiv;k++)
{
if(divs[k].className.indexOf(inClassName)>-1)
{
tabs.push(divs[k]);
}
}
}
//为每个选项卡建立切换功能
for(var j=0,len=tabs.length; j<len; j++)
{
//获取标题和内容列表
var tab = tabs[j];
//使用私有作用域为每个选项卡建立切换
(function(){
var nameUl = tab.getElementsByTagName("ul")[0];
var content = tab.getElementsByTagName("ul")[1];
//初始化选项卡
nameUl.getElementsByTagName("li")[0].className = "selected";
content.getElementsByTagName("li")[0].style.display = "block";
//添加事件委托
EventUtil.addHandler(nameUl,triggerType,function(event)
{
//获取事件对象
event = EventUtil.getEvent(event);
var target = EventUtil.getTarget(event);
//选项卡切换
if(target.nodeName.toLowerCase() == "li")
{
//分别取得标题列表项和内容列表项
var nameList = nameUl.getElementsByTagName("li");
var contentList = content.getElementsByTagName("li");
//标题添加selected类,并显示内容
for(var i=0,len=nameList.length; i<len; i++)
{
nameList[i].className = "";
contentList.style.display = "none";
if(nameList == target)
{
nameList.className = "selected";
contentList.style.display = "block";
}
}
}
});
})();
}
}
window.onload=function()
{
//设置选项卡切换方式
tabSwitch("tab1","click");
tabSwitch("tab2","mouseover");
}
</script>


<div class="tab1">
<ul class="name">
<li>项目一</li>
<li>项目二</li>
<li>项目三</li>
</ul>
<ul class="content">
<li>类为<em>"tab1"</em>项目一内容,通过<em>"click"</em>触发</li>
<li>类为<em>"tab1"</em>项目二内容,通过<em>"click"</em>触发</li>
<li>类为<em>"tab1"</em>项目三内容,通过<em>"click"</em>触发</li>
</ul>
</div>
<div class="tab1">
<ul class="name">
<li>项目一</li>
<li>项目二</li>
<li>项目三</li>
</ul>
<ul class="content">
<li>类为<em>"tab1"</em>项目一内容,通过<em>"click"</em>触发</li>
<li>类为<em>"tab1"</em>项目二内容,通过<em>"click"</em>触发</li>
<li>类为<em>"tab1"</em>项目三内容,通过<em>"click"</em>触发</li>
</ul>
</div>
<div class="tab2">
<ul class="name">
<li>项目一</li>
<li>项目二</li>
<li>项目三</li>
</ul>
<ul class="content">
<li>类为<em>"tab2"</em>项目一内容,通过<em>"mouseover"</em>触发</li>
<li>类为<em>"tab2"</em>项目二内容,通过<em>"mouseover"</em>触发</li>
<li>类为<em>"tab2"</em>"项目三内容,通过<em>"mouseover"</em>触发</li>
</ul>
</div>


</code>
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