js实现指定时间倒计时效果

时间:2021-04-03 人气:0

<!DOCTYPE html>
 <html lang="en">
 <head>
 <meta charset="UTF-8">
 <title>计时</title>
 </head>
 <body>
 <div style="display: flex; justify-content: center; align-items: center;">
  <span>从2019年6月31日至今：</span>
  <span id="timeid1" style="font-size:35px"></span>天
  <span id="timeid2" style="font-size:35px"></span>小时
  <span id="timeid3" style="font-size:35px"></span>分
  <span id="timeid4" style="font-size:35px"></span>秒
 </div>
 <script type="text/javascript">
  function loveTime() {
  var the=new Date(2019,6,31) 
  var date = new Date() - the
  var days = Math.floor(date / 1000 / 60 / 60 / 24) // 从这里开始
  var daysmod = date - days * 24 *60 * 60 * 1000 
  var hours = Math.floor(daysmod / 1000 / 60 / 60) 
  var hoursmod = date - (days * 24 *60 * 60 * 1000) - (hours * 1000 * 60 * 60) 
  var minutes = Math.floor(hoursmod / 1000 / 60)
  var minutesmod = date - (days * 24 *60 * 60 * 1000) - (hours * 1000 * 60 * 60) - (minutes * 1000 * 60)
  var seconds = Math.floor(minutesmod / 1000) // 到这里结束，是将总毫秒转化成对应天数+小时数+分钟数+秒数的转换方法
  var daysshow = document.getElementById("timdid1");
  var ds = document.getElementById("timeid1");
  var hs = document.getElementById("timeid2");
  var ms = document.getElementById("timeid3");
  var ss = document.getElementById("timeid4");
  ds.innerHTML = days;
  hs.innerHTML = hours;
  ms.innerHTML = minutes;
  ss.innerHTML = seconds;
  }
  // 使用定时器实现每一秒写一次时间
  setInterval("loveTime();",1000);

 </script>
</body>
</html>

更多关于倒计时的文章请查看专题：《倒计时功能》

更多JavaScript时钟特效点击查看：JavaScript时钟特效专题

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