dayObj = new Date();
monthStr = dayObj.getMonth() + 1;
yearStr=dayObj.getYear();
document.write('今天是'+yearStr+'年'+monthStr+'月'+dayObj.getDate()+'日          ');if (dayObj.getDay()==2)  document.write('星期一');if (dayObj.getDay()==3)  document.write('星期二');if (dayObj.getDay()==4)  document.write('星期三');if (dayObj.getDay()==5)  document.write('星期四');if (dayObj.getDay()==6)  document.write('星期五');if (dayObj.getDay()==0)  document.write('星期六');