初探JavaScript魅力（四）

<title>无标题文档</title>
<style>
#div1 .active{background:#FF0;}
#div1 div{width:200px; height:200px; background:#666; border:1px solid #999;
         display:none;}
</style>
<script>
window.onload=function (){
    var oDiv=document.getElementById(‘div1‘);
    var aBtn=oDiv.getElementsByTagName(‘input‘);
    var aDiv=oDiv.getElementsByTagName(‘div‘);
    
    for(var i=0;i<aBtn.length;i++){
        aBtn[i].index=i;
        aBtn[i].onclick=function (){
            for(var i=0;i<aBtn.length;i++){
                aBtn[i].className=‘‘;
                aDiv[i].style.display=‘none‘;
                }
                this.className=‘active‘;
                aDiv[this.index].style.display=‘block‘;
            };
        }
    };
</script>
</head>

<body>
<div id="div1">
<input class="active" type="button" value="教育"/>
<input type="button" value="培训"/>
<input type="button" value="招生"/>
<input type="button" value="出国"/>
   <div style="display:block;">1111</div>
   <div>2222</div>
   <div>3333</div>
   <div>4444</div>
</div>
</body>