<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>选项卡切换</title>
<style type="text/css">
#tab input {
background: #999;
border: 1px solid #F00;
}
#tab .active {
background: #000;
color:#FFF;
}
#tab div {
width:400px;
height:300px;
display:none;
padding: 10px;
background: #CCC;
border: 1px solid #F00;
}
</style>
</head>
<body>
<script type="text/javascript">
window.onload = function(){
var tab = new Tab("tab");
}
function Tab(id){
var _this = this;
var tabBox = document.getElementById(id);
this.tabBtn = tabBox.getElementsByTagName('input');
this.tabDiv = tabBox.getElementsByTagName('div');
//console.log(this);
for(var i=0;i<this.tabBtn.length;i++){
this.tabBtn[i].index = i;
this.tabBtn[i].onclick = function(){
//注意参数this代表的是this.tabBtn[i]，即input按钮
_this.clickBtn(this);
};
}
};
//将点击的按钮以参数的形式传入
Tab.prototype.clickBtn = function(an){
for(var j=0;j<this.tabBtn.length;j++){
this.tabBtn[j].className='';
this.tabDiv[j].style.display='none';
}
an.className='active';
this.tabDiv[an.index].style.display='block';
};
</script>
<body>
<div id="tab">
<input type="button" value="1" class="active" />
<input type="button" value="2" />
<input type="button" value="3" />
<div style="display:block;">1111111</div>
<div>22222222</div>
<div>33333333</div>
</div>
</body>
</html>
