<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <body><html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> </head> <script> alert("My First JavaScript") </script> <p id="demo">A Paragraph</p> <script src="Untitled-3.js"> </script> <button type="button" onclick="wwz()">这儿</button> </body> </html>