<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<style>
.active
{
background:#9CC;
}
.div2
{
215px;
height:200px;
border:1px #666666 solid;
display:none;
}
input
{
50px;
}
</style>
<div id="div1">
<input type="button" class="active" value="1"/>
<input type="button" value="2"/>
<input type="button" value="3"/>
<input type="button" value="4"/>
<div class="div2" style="display:block;">11</div>
<div class="div2">22</div>
<div class="div2">33</div>
<div class="div2">44</div>
</div>
<script>
window.onload=function(){
var odiv=document.getElementById('div1');//获取div
var btn=odiv.getElementsByTagName('input');//获取div下的input
var div2=odiv.getElementsByTagName('div') ;//获取div下的div
for(i=0;i<btn.length;i++)//循环每个按钮
{
btn[i].index=i; //btn[i]是指定button的第i个按钮;为该按钮添加一个index属性,并将index的值设置为i
btn[i].onclick=function() //按钮的第i个点击事件
{
for(i=0;i<btn.length;i++) //循环去掉button的样式,把div隐藏
{
btn[i].className=''; //清空按钮的样式
div2[i].style.display='none'; //隐藏div
}
this.className='active'; //自身添加active
div2[this.index].style.display='block'; //this.index是当前div
}
}
}
</script>
</body>
</html>