<!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>
</head>
<body>
<script language="javaScript">
now = new Date(),hour = now.getHours()
if(hour < 6){document.write("凌晨好！")}
else if (hour < 9){document.write("早上好！")}
else if (hour < 12){document.write("上午好！")}
else if (hour < 14){document.write("中午好！")}
else if (hour < 17){document.write("下午好！")}
else if (hour < 19){document.write("傍晚好！")}
else if (hour < 22){document.write("晚上好！")}
else {document.write("夜里好！")}
</script>
</body>
</html>