<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>
<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>