代码如下：
<html>
<head>
<title>在不同的时间显示不同的提示信息</title>
</head>
<body>
<script language="javascript">
<!--
d = new Date();
hours = d.getHours();
document.write("现在的时间是：");
document.write(hours, "时")
document.write(d.getMinutes(), "分")
document.write(d.getSeconds(), "秒");
if (hours == 1) msg = "烈火提示，零晨一点了，别忘了休息！";
if (hours == 2) msg = "该休息了，身体可是革命的本钱！";
if (hours == 3) msg = "夜深人静，只有你敲击键盘的声音...";
if (hours == 4) msg = "四点过去了，你明天不上班？？";
if (hours == 5) msg = "哇，早上的阳光不错，该去晨练了！！";
if (hours == 6) msg = "你知道吗，此时是国内网络速度最快的时候！";
if (hours == 7) msg = "新的一天开始了，祝你过的快乐！";
if (hours == 8 || hours == 9 || hours == 10)
msg = "上午好，你今天看上去很精神！";
if (hours == 11) msg = "十一点过了，快下班了吧？";
if (hours == 12) msg = "十二点过了，还没下班？";
if (hours == 13 || hours == 14) msg = "你不睡午觉？";
if (hours == 15 || hours == 16 || hours == 17)
msg = "下午好";
if (hours == 18 || hours == 19) msg = "吃晚饭了吧？";
if (hours == 20 || hours == 21 || hours == 22)
msg = "今天又在玩电脑，没节目？";
if (hours == 23) msg = "真是越玩越精神了，不打算睡了？";
if (hours == 0) msg = "凌晨了，还不睡？";
document.write("<br>提示信息:", msg);
//-->
</script>
</body>
</html>