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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>js选项卡练习</title>
</head>
<style>
*{
margin: 0;
padding: 0;
}
a{
text-decoration: none;
color: black;
}
a:hover {
text-decoration: none;
color: rosybrown;
}
#tab{
width: 300px;
padding: 5px;
height: 200px;
margin: 20px;
}
#tab ul li.on {
border-top:2px solid red;
border-bottom:2px solid gold;
}
#tab ul{
list-style: none;
display: ;
height: 30px;
line-height: 30px;
border-bottom:2px #c88 solid;
}
#tab ul li {
background: #FFF;
cursor: pointer;
float: left;
height:29px;
line-height: 29px;
padding: 0px 10px;
margin: 0px 10px;
border: 1px solid #BBB;
border-bottom: 2px solid #C88;
}
#tab div {
height: 100px;
width:278px;
line-height: 24px;
border-top: none;
border: 1px solid #336699;
padding: 10px;
overflow: hidden;
}
.hide {
display: none;
}
</style>
<script type="text/javascript">
window.onload = function() {
var nbTab = document.getElementById("tab"); //获取整个div
var nbUl = nbTab.getElementsByTagName("ul")[0]; //一个节点
var nbLi = nbUl.getElementsByTagName("li"); //数组
var nbDiv = nbTab.getElementsByTagName("div"); //数组
for (var i = 0; i < nbLi.length; i++) {
nbLi[i].index = i;
nbLi[i].onclick = function() {
for (var j = 0; j < nbLi.length; j++) {
nbLi[j].className = "off";
nbDiv[j].className = "hide";
}
this.className = "on";
nbDiv[this.index].className = "show；"
}
}
}
</script>
<body>
<p>1、首先需要获取选项卡标题和选项卡内容</p>
<p>2、选项卡内容有三个，需要循环遍历来操作，得知哪个选项卡和哪个选项内容匹配。</p>
<p>3、通过改变DOM的css类名称,当前点击的选项卡显示，其它隐藏。 </p>
<!-- content -->
<div id="tab">
<ul>
<li class="on">选项1</li>
<li class="off">选项2</li>
<li class="off">选项3</li>
</ul>
<div id="apage" class="show">
<a href="">11111111111111111111</a>
<a href="">11111111111111111111</a>
<a href="">11111111111111111111</a>
<a href="">11111111111111111111</a>
</div>
<div id="bpage" class="hide">
<a href="">22222222222222222222</a>
<a href="">22222222222222222222</a>
<a href="">22222222222222222222</a>
<a href="">22222222222222222222</a>
</div>
<div id="cpage" class="hide">
<a href="">33333333333333333333</a>
<a href="">33333333333333333333</a>
<a href="">33333333333333333333</a>
<a href="">33333333333333333333</a>
</div>
</div>
<!-- end-content -->
</body>
</html>