JS 顯示時間

<div class="GlobalClock">
        <span id="spanClock">clock</span>
 </div> 

 

.GlobalClock {
    padding: 10px 20px 0 0;
    text-align: right;
    color: Black;
    font-size: 26px;
    font-weight: bold;
}

function startclock() { 

          var thetime = new Date(); 

          //本地時間與GMT時間差距
          //thetime.getTimezoneOffset() / 60;
          //擷取GMT時間
          //thetime.getUTCHours();
          //擷取GMT時間          
          //(thetime.getHours() + AorP);
          //擷取本地時區
          //var tzo = (new Date().getTimezoneOffset() / 60) * (-1);

    var nhours = thetime.getHours();    var nmins = thetime.getMinutes();    var nsecn = thetime.getSeconds();//    var nday = thetime.getDay();//    var nmonth = thetime.getMonth();//    var ntoday = thetime.getDate();//    var nyear = thetime.getYear();    var AorP = " ";    if (nhours >= 12)        AorP = "P.M.";    else        AorP = "A.M.";    if (nhours >= 13)        nhours -= 12;    if (nhours == 0)        nhours = 12;    if (nsecn < 10)        nsecn = "0" + nsecn;    if (nmins < 10)        nmins = "0" + nmins;//    if (nday == 0)//        nday = "Sunday";//    if (nday == 1)//        nday = "Monday";//    if (nday == 2)//        nday = "Tuesday";//    if (nday == 3)//        nday = "Wednesday";//    if (nday == 4)//        nday = "Thursday";//    if (nday == 5)//        nday = "Friday";//    if (nday == 6)//        nday = "Saturday";//    nmonth += 1;//    if (nyear <= 99)//        nyear = "19" + nyear;//    if ((nyear > 99) && (nyear < 2000))//        nyear += 1900;    document.getElementById("spanClock").innerHTML = nhours + ": " + nmins + ": " + nsecn; // + " " + AorP + " " + nday + ", " + nmonth + "/" + ntoday + "/" + nyear;    setTimeout('startclock()', 1000);}