<html><head></head> <body> <script language="javascript" type="text/javascript">var x;x=parseInt(Math.random()*(80-1))+1;//产生1到80之间的随机数，如果要产生x到y之间的随机数则样式为：x=parseInt(Math.random()*(y-1))+x;document.write(x,'<br>');</script></body></html>