// JavaScript Document
 var time=new Date();
 var year=time.getYear();
 var month=time.getMonth()+1;
 var date=time.getDate();
 var day=time.getDay();
 var hour=time.getHours();
 var week;
 var hello;
 switch(day)
 {
  case 0:
   week="日";
   break;
  case 1:
   week="一";
   break;
  case 2:
   week="二";
   break;
  case 3:
   week="三";
   break;
  case 4:
   week="四";
   break;
  case 5:
   week="五";
   break;
  case 6:
   week="六";
   break;
 }
 if(hour>=0&&hour<12)
 {
  hello="上午好";
 }else if(hour>=12&&hour<=18)
 {
  hello="下午好";
 }else if(hour>18&&hour<=24)
 {
  hello="晚上好";
 }
 document.write(year+"年"+month+"月"+date+"日");