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点击改变p和div元素：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>test javascript</title> <style type="text/css"> body{ margin:0px; padding:0px; background:#999999; } #button{ border-radius:6px; color:#00FF00; font-size:16px; } </style> </head> <body> <h1>My Site</h1> <p id="demo">一个段落</p> <div id="myDIV" onclick="JavaScript:alert("hello lt")">一个div块</div> <button type="button" id="button" onclick="myFunction()" >click me</button> <script type="text/javascript"> function myFunction(){ document.getElementById("demo").innerHTML="Hello world!"; document.getElementById("myDIV").innerHTML = "How are you!"; } </script> </body> </html>
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原文地址：http://www.cnblogs.com/blogofwyl/p/4541485.html
