動態時間顯示

<script type="text/javascript">
function showtime() {
 var today, hour, second, minute, year, month, date;
 var strDate, n_day;

 today = new Date();
 year = today.getFullYear();
 month = today.getMonth() + 1;
 date = today.getDate();
 hour = today.getHours();
 minute = today.getMinutes();
 second = today.getSeconds();
 n_day = today.getDay();

 if (month < 10) month = "0" + month;
 if (date < 10) date = "0" + date;
 if (hour < 10) hour = "0" + hour;
 if (minute < 10) minute = "0" + minute;
 if (second < 10) second = "0" + second;

 switch (n_day) {
  case 0:
   strDate = "日曜日";
   break;
  case 1:
   strDate = "月曜日";
   break;
  case 2:
   strDate = "火曜日";
   break;
  case 3:
   strDate = "水曜日";
   break;
  case 4:
   strDate = "木曜日";
   break;
  case 5:
   strDate = "金曜日";
   break;
  case 6:
   strDate = "土曜日";
   break;
  case 7:
   strDate = "星期日";
   break;
 }

 document.getElementById('time').innerHTML = year + "/" + month + "/" + date + " " + strDate + " " + hour + ":" + minute + ":" + second;
 setTimeout("showtime();", 1000);
}
</script>
<body>
 <div id="time">
  <script type="text/javascript">showtime();</script>
 </div>
</body>

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