js 获取当前时间

<script language="javascript">
            var week;
            if(new Date().getDay()==0)           week="星期日"
            if(new Date().getDay()==1)          week="星期一"
   if(new Date().getDay()==2)          week="星期二"
   if(new Date().getDay()==3)          week="星期三"
   if(new Date().getDay()==4)          week="星期四"
   if(new Date().getDay()==5)          week="星期五"
   if(new Date().getDay()==6)          week="星期六"
            document.write("CRM系统友情提示：当前时间是："+new Date().getYear()+"年"+(new Date().getMonth()+1)+"月"+new Date().getDate()+"日 "+week);