在网页上获取当前日期，数字时钟

(function() {
    var d, s ="";
    var x = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");
    d = new Date();
    s+=d.getFullYear()+"年"+(d.getMonth() + 1)+"月"+d.getDate()+"日　";
    s+=x[d.getDay()];
    document.writeln(s);
}
)();

数字时钟

<span id="datetime">time</span>
<script>
  function setTime(){
     var day="";
     var month="";
     var ampm="";
     var ampmhour="";
     var myweekday="";
     var year="";
     var myHours="";
     var myMinutes="";
     var mySeconds="";
     mydate=new Date();
     myweekday=mydate.getDay();
     mymonth=parseInt(mydate.getMonth()+1)<10?"0"+(mydate.getMonth()+1):mydate.getMonth()+1;
     myday= mydate.getDate();
     myyear= mydate.getYear();
     myHours = mydate.getHours();
     myMinutes = mydate.getMinutes();
     mySeconds = parseInt(mydate.getSeconds())<10?"0"+mydate.getSeconds():mydate.getSeconds();
     year=(myyear > 200) ? myyear : 1900 + myyear;
     if(myweekday == 0)
       weekday=" 星期日 ";
     else if(myweekday == 1)
       weekday=" 星期一 ";
     else if(myweekday == 2)
       weekday=" 星期二 ";
     else if(myweekday == 3)
       weekday=" 星期三 ";
     else if(myweekday == 4)
       weekday=" 星期四 ";
     else if(myweekday == 5)
       weekday=" 星期五 ";
     else if(myweekday == 6)
       weekday=" 星期六 ";
     datetime.innerText=year+"年"+mymonth+"月"+myday+"日 "+myHours+":"+myMinutes+":"+mySeconds+" "+weekday;
     setTimeout("setTime()",1000);
  }
  setTime();
</script>