1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 <html xmlns="http://www.w3.org/1999/xhtml">
 3 <head>
 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 5 <title>控制div属性</title>
 6 <style>
 7 #outer{width:500px;margin:0 auto;padding:0;text-align:center;}
 8 #div1{width:100px;height:100px;background:black;margin:10px auto;display:block;}
 9 </style>
10 <script>
11 var changeStyle = function (elem, attr, value)
12 {
13     elem.style[attr] = value
14 };
15 window.onload = function ()
16 {
17     var oBtn = document.getElementsByTagName("input");
18     var oDiv = document.getElementById("div1");
19     var oAtt = ["width","height","background","display","display"];
20     var oVal = ["200px","200px","red","none","block"];
21 
22     for (var i = 0; i < oBtn.length; i++)
23     {
24         oBtn[i].index = i;
25         oBtn[i].onclick = function ()
26         {
27             this.index == oBtn.length - 1 && (oDiv.style.cssText = "");
28             changeStyle(oDiv, oAtt[this.index], oVal[this.index])
29         }    
30     }
31 };
32 </script>
33 </head>
34 <body>
35 <div id="outer">
36 <input type="button" value="变宽" />
37 <input type="button" value="变高" />
38 <input type="button" value="变色" />
39 <input type="button" value="隐藏" />
40 <input type="button" value="重置" />
41 <div id="div1"></div>
42 </div>
43 </body>
44 </html>