1、

<script type="text/javascript">
  function showLocale(objD){
   var str,colorhead,colorfoot;
   var yy = objD.getYear();
   if(yy<1900) yy = yy+1900;
   var MM = objD.getMonth()+1;
   if(MM<10) MM = '0' + MM;
   var dd = objD.getDate();
   if(dd<10) dd = '0' + dd;
   var hh = objD.getHours();
   if(hh<10) hh = '0' + hh;
   var mm = objD.getMinutes();
   if(mm<10) mm = '0' + mm;
   var ss = objD.getSeconds();
   if(ss<10) ss = '0' + ss;
   var ww = objD.getDay();
   if  ( ww==0 )  colorhead="<font color=\"#0011aa\">";
   if  ( ww > 0 && ww < 6 )  colorhead="<font color=\"#373737\">";
   if  ( ww==6 )  colorhead="<font color=\"#008000\">";
   if  (ww==0)  ww="星期日";
   if  (ww==1)  ww="星期一";
   if  (ww==2)  ww="星期二";
   if  (ww==3)  ww="星期三";
   if  (ww==4)  ww="星期四";
   if  (ww==5)  ww="星期五";
   if  (ww==6)  ww="星期六";
   colorfoot="</font>"
   str = colorhead+"系统当前时间是：" + yy + "-" + MM + "-" + dd + " " + hh + ":" + mm + ":" + ss + "  " + ww + colorfoot;
   return(str);
   }
   function tick()
   {
   var today;
   today = new Date();
   document.write(showLocale(today));
   window.setTimeout("tick()", 1000);
   }
   tick();
 </script>

 

2、div里取

<div>

<font class="time" id="www_da2da_com"></font>
     </div><!--日期显示在此处-->
 <script type="text/javascript">
  function showLocale(objD){
   var str,colorhead,colorfoot;
   var yy = objD.getYear();
   if(yy<1900) yy = yy+1900;
   var MM = objD.getMonth()+1;
   if(MM<10) MM = '0' + MM;
   var dd = objD.getDate();
   if(dd<10) dd = '0' + dd;
   var hh = objD.getHours();
   if(hh<10) hh = '0' + hh;
   var mm = objD.getMinutes();
   if(mm<10) mm = '0' + mm;
   var ss = objD.getSeconds();
   if(ss<10) ss = '0' + ss;
   var ww = objD.getDay();
   if  ( ww==0 )  colorhead="<font color=\"#0011aa\">";