<!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=utf-8" /> <title>无标题文档</title> <script type="text/javascript"> document.write("吃饱了就睡吧！") prompt("请输入小于5的整数","一定要小于5") confirm("确定要关闭吗？") alert("你好！") </script> </head> <body> <font size="+4">今天是星期五</font> </body> </html>