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                        /前端開發(fā)
                        
                            /JavaScript
                        
                        /JavaScript進階篇

為什么我實現(xiàn)不了切換功能呢？

<!DOCTYPE html>
<html>
<head>
??? <meta charset="UTF-8">
??? <title>實踐題 - 選項卡</title>
??? <style type="text/css">
???? /* CSS樣式制作 */?
??? *{padding:0px;margin:0px;font:12px normal"microsoft yahei";}??
??? #tabs{width:290px;padding:5px;height:150px;margin:20px;}
??? #tabs ul{list-style:none;display:block;height:30px;line-height:30px;border-bottom:2px saddlebrown solid;}
??? #tabs ul li{background:#fff;cursor:pointer;float:left;list-style:none;height:28px;line-height:28px;margin:0px 3px;border:1px solid #aaa;border-bottom:none;display:inline-block;width:60px;text-align:center;}
??? #tabs ul li.on{
??????? border-top:2px solid saddlebrown;border-bottom:2px solid #fff;}
???????
??? #tabs div{height:120px;line-height:25px;border:1px solid #336699;border-top:none;padding:5px;}
??? .hide{display:none;}
??? </style>
??? <script type="text/javascript">
????????
??? // JS實現(xiàn)選項卡切換
??? window.onload=function(){
??????? var otab=document.getElementById("tabs");
??????? var oul=otab.getElementsByTagName("ul")[0];
??????? var olis=oul.getElementsByTagName("li");
??????? var odivs=otab.getElementsByTagName("div");
???????
??????? for(var i=0,len=ois.length;i<len;i++){
??????????? olis[i].index=i;
??????????? olis[i].onmouseover = function() {
??????????????? for(var n= 0;n<len;n++){
??????????????????? olis[n].className = "";
??????????????????? odivs[n].className = "hide";
??????????????? }
??????????? this.className = "on";
??????????? odivs[this.index].className = "";
??????????? }
??????? };
??? }
???
??? </script>
?
</head>
<body>

<div id="tabs">
??? <ul>
??????? <li class="on">房產(chǎn)</li>
??????? <li>家居</li>
??????? <li>二手房</li>
??? </ul>
??? <div>
??????? 275萬購昌平鄰鐵三居總價20萬買一居<br>
??????? 200萬內購五環(huán)三居 140萬安家東三環(huán)<br>
??????? 北京首現(xiàn)零首付樓盤 53萬購東5環(huán)50平<br>
??????? 京樓盤直降5000 中信府公園樓王現(xiàn)房<br>
??? </div>
??? <div class="hide">
??????? 40平出租屋大改造美少女的混搭小窩<br>
??????? 經(jīng)典清新簡歐愛家 90平老房煥發(fā)新生<br>
??????? 新中式的酷色溫情 66平撞色活潑家居<br>
??????? 瓷磚就像選好老婆衛(wèi)生間煙道的設計<br>
??? </div>
??? <div class="hide">
??????? 通州豪華3居260萬二環(huán)稀缺2居250w甩<br>
??????? 西3環(huán)通透2居290萬 130萬2居限量搶購<br>
??????? 黃城根小學學區(qū)僅260萬 121平70萬拋!<br>
??????? 獨家別墅280萬蘇州橋2居優(yōu)惠價248萬<br>
??? </div>
</div>?
</body>
</html>