闭包写个选项卡 
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="智能社 - zhinengshe.com">
<meta name="copyright" content="智能社 - zhinengshe.com">
<title>智能社 - www.zhinengshe.com</title>
<style>
input { width:100px; height:30px; line-height:30px; }
input.active { background:yellow; }

#box div { display:none; width:300px; height:300px; background:#ccc; }
#box .active { display:block; }
</style>
<script>
window.onload=function (){
    var aBtn=document.getElementsByTagName('input');
    var oDiv=document.getElementById('box');
    var aDiv=oDiv.getElementsByTagName('div');

    for (var i=0; i<aBtn.length; i++)
    {
        (function (index){
            aBtn[index].onclick=function (){
                for (var i=0; i<aBtn.length; i++)
                {
                    aBtn[i].className='';
                    aDiv[i].className='';
                }
                aBtn[index].className='active';
                aDiv[index].className='active';
            };
        })(i);
    }
};
</script>
</head>

<body>
    <input type="button" value="新闻" class="active" />
    <input type="button" value="广播" />
    <input type="button" value="电影" />

    <div id="box">
        <div class="active">1111111111111</div>
        <div>2222222222222</div>
        <div>3333333333333</div>
    </div>
</body>
</html>

 

posted on 2015-09-08 17:41  高尔础础  阅读(171)  评论(0)  编辑  收藏  举报