now = new Date(),hour = now.getHours()if(hour < 6){document.write("太晚了，该休息了!!!")}else if (hour < 8){document.write("早上好!全新的一天开始了!")}else if (hour < 12){document.write("上午好!工作辛苦了!")}else if (hour < 14){document.write("中午好!还在上网吗?")}else if (hour < 18){document.write("下午好!今天心情怎样?")}else if (hour < 22){document.write("好一个静谧的夜!")}else if (hour < 24){document.write("夜深了! 要注意身体呀! 祝你做个好梦!")}