JS如何写tab选项卡的循环切换,并且如果选中当前选项卡的,则要从选中的下一个开始循环

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JS如何写tab选项卡的循环切换,并且如果选中当前选项卡的,则要从选中的下一个开始循环,第1张

<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<title>Tab效果</title>

<style type="text/css">

ul{

list-style: none

}

*{

margin: 0

padding: 0

}

#tab{

border: 1px solid #ccc

margin: 20px auto

width: 403px

border-top: none

}

.list ul{

overflow: hidden

}

.list li{

float: left

}

.list li{

padding-left: 28px

padding-right: 28px

padding-top: 6px

padding-bottom: 6px

border: 1px solid #ccc

background: -moz-linear-gradient(top, #FEFEFE, #EDEDED)

background:-webkit-gradient(linear,left top,left bottom, from(#fefefe), to(#ededed))

border-right: none

cursor: pointer

}

#listCon{

height: 100px

}

#listCon div{

padding:10px

position:absolute

opacity:0

filter:alpha(opacity=0)

}

.list li:first-child{

border-left: none

}

.list li:hover{

background: #fff

border-bottom: none

}

.list li.cur{

background: #fff

border-bottom: none

}

#listCon div.cur{

opacity:1

filter:alpha(opacity=100)

}

</style>

</head>

<body>

<div id="tab">

<div>

<ul>

<li>许嵩</li>

<li>周杰伦</li>

<li>林俊杰</li>

<li>陈奕迅</li>

</ul>

</div>

<div id="listCon">

<div>断桥残雪、千百度、幻听、想象之中</div>

<div>红尘客栈、牛仔很忙、给我一首歌的时间、听妈妈的话</div>

<div>被风吹过的夏天、江南、一千年以后</div>

<div>十年、K歌之王、浮夸</div>

</div>

</div>

<script type="text/javascript">

window.onload = function(){

var oDiv = document.getElementById("tab")

var lis = oDiv.getElementsByTagName("li")

var oDivCon = document.getElementById("listCon")

var lisDiv = oDivCon.getElementsByTagName("div")

for(var i=0i<lis.lengthi++){

lis[i].index = i

lis[i].onmouseover = function(){

show(this.index)

}

}

function show(a){

for(var j=0j<lis.lengthj++){

lis[j].className = ""

lisDiv[j].className = ""

}

lis[a].className = "cur"

lisDiv[a].className = "cur"

}

}

</script>

</body>

</html>

楼主 你的代码不全 我给你重新写一个吧

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

    <title>tab页切换</title>

    <meta http-equiv="Content-Type" content="text/html charset=utf-8" />

    <script type="text/javascript">

        function switchTab(ProTag, ProBox) {

            for (i = 1 i < 5 i++) {

                if ("tab" + i == ProTag) {

                    document.getElementById(ProTag).getElementsByTagName("a")[0].className = "on"

                } else {

                    document.getElementById("tab" + i).getElementsByTagName("a")[0].className = ""

                }

                if ("con" + i == ProBox) {

                    document.getElementById(ProBox).style.display = ""

                } else {

                    document.getElementById("con" + i).style.display = "none"

                }

            }

        }

    </script>

    <style type="text/css">

        *

        {

            padding: 0

            margin: 0

            line-height: 25px

            font-size: 12px

            list-style:none

        }

        #tabContainer

        {

            margin: 30px

        }

        #tabContainer li

        {

            float: left

            width: 80px

            margin: 0 3px

            background: #efefef

            text-align: center

        }

        #tabContainer a

        {

            display: block

        }

        #tabContainer a.on

        {

            background: pink

        }

    </style>

</head>

<body>

    <div id="tabContainer">

        <ul>

            <li id="tab1"><a href="#" class="on" onclick="switchTab('tab1','con1')this.blur()return false">

                命运</a></li>

            <li id="tab2"><a href="#" onclick="switchTab('tab2','con2')this.blur()return false">

                运势</a></li>

            <li id="tab3"><a href="#" onclick="switchTab('tab3','con3')this.blur()return false">

                缘分</a></li>

            <li id="tab4"><a href="#" onclick="switchTab('tab4','con4')this.blur()return false">

                人生</a></li>

        </ul>

        <div style="clear: both">

        </div>

        <div id="con1">

            命运是个神马玩意儿...

        </div>

        <div id="con2" style="display: none">

            霉运也是一种运气...

        </div>

        <div id="con3" style="display: none">

            缘份纯粹是蒙人的东西...

        </div>

        <div id="con4" style="display: none">

            人生就是人"生"出来之后的过程...

        </div>

    </div>

</body>

</html>