juery 实现选项卡

<!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>无标题文档</title>
<style>
    #div1 div{width:200px;height:200px;border:1px solid #F00;display:none;}
    .active{ background:red;}
</style>
<script type="text/javascript" src="jquery-1.10.1.min.js"></script>
<script>
    /*window.onload = function(){
        var oDiv = document.getElementById('div1');
        var aInput = oDiv.getElementsByTagName('input');
        var aDiv = oDiv.getElementsByTagName('div');
        alert(aInput.length);
        for(var i=0;i<aInput.length;i++){
            aInput[i].index = i;
            aInput[i].onclick = function(){
                
                for(var i=0;i<aInput.length;i++){
                    aInput[i].className = '';
                    aDiv[i].style.display = 'none';
                }
                aInput[this.index].className = 'active';
                aDiv[this.index].style.display = 'block';
            };
        }
    };*/
    
    $(function(){
        $('#div1').find('input').click(function(){
            $('#div1').find('input').attr('class','');//将所有元素属性去掉
            $('#div1').find('div').css('display','none');
            
            $(this).attr('class','active');
            $('#div1').find('div').eq($(this).index()).css('display','block');
        });
    });
</script>
</head>

<body>
<div id="div1">
    <input class="active" type="button" value="1"/>
    <input type="button" value="2"/>
    <input type="button" value="3"/>
    <div style="display:block">111</div>
    <div>222</div>
    <div>333</div>
</div>
</body>
</html>