(024)javascript_dom_firstChild 

 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>DOM</title>
 6     <script type="text/javascript">
 7 
 8         window.onload = function() {
 9 
10             var ulNode = document.getElementById("ulNode");
11 
12             //ulNode.firstChild.style.background = "blue"; IE下获取第一个子节点
13             //ulNode.firstElementChild.style.background = "blue"; //Chrome,Firefox下获取第一个子节点
14 
15             var firstLiNode = ulNode.firstElementChild  || ulNode.firstChild;
16 
17             alert(firstLiNode);
18 
19             firstLiNode.style.background = "blue";
20         };
21         
22     </script>
23 </head>
24 
25 <body>
26     <ul id="ulNode">
27         <li>aaa</li>
28         <li>bbb</li>
29         <li>ccc</li>
30     </ul>
31 </body>
32 </html>

 

posted @ 2014-02-06 10:09  雪中飞雁  阅读(109)  评论(0)    收藏  举报