today=new Date();
var day; var date; var hello; var wel;
hour=new Date().getHours()
if(hour < 6)hello='凌晨好'
else if(hour < 9)hello= '早上好！'
else if(hour < 12)hello='上午好！'
else if(hour < 14)hello='中午好！'
else if(hour < 17)hello='下午好！'
else if(hour < 19)hello='傍晚好！'
else if(hour < 22)hello='晚上好！'
else {hello='夜里好!'}
if(today.getDay()==0)day='星期日'
else if(today.getDay()==1)day='星期一'
else if(today.getDay()==2)day='星期二'
else if(today.getDay()==3)day='星期三'
else if(today.getDay()==4)day='星期四'
else if(today.getDay()==5)day='星期五'
else if(today.getDay()==6)day='星期六'
date=(today.getYear())+'年'+(today.getMonth() + 1 )+'月'+today.getDate()+'日';

document.write(hello + ' ' + '现在是：' + date + ' ' + day + ' ' + hour + '时');