<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=GBK"> <title>Untitled Document</title> </head> <body> <script type="text/javascript"> function run(){ var idNode=document.getElementById("divid"); var text=idNode.innerHTML; idNode.innerHTML="div的文本被我该了哈哈" // alert(idNode.nodeValue+":"+idNode.nodeType+":"+idNode.nodeName); alert(text); } function run1(){ var Nodes=document.getElementsByName("user"); alert(Nodes[0].value); } function run2(){ var Nodes=document.getElementsByTagName("a"); // alert(Nodes.length); alert(Nodes[1].innerHTML); } </script> <input type="button" value="document" onclick="run2()"/> <div id="divid">div标签练习</div> <input type="text" name="user"/> <a href="http://www.baidu.com">百度网站</a> <a href="http://www.google.com">谷歌网站</a> </body> </html>