destoon js判断早上好,上午好,下午好,傍晚好,晚上好

<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 < 23){document.write("晚上好！")}

else {document.write("夜里好！")}

</script>