js实现计时时分秒

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="UTF-8">

  <title>计时器</title>

  <script>

    var hour,minute,second;//时 分 秒

    hour=minute=second=0;//初始化

    var int;

    var millisecond=0;//毫秒

    function Reset()//重置

    {

      window.clearInterval(int);

      millisecond=hour=minute=second=0;

      document.getElementById('timetext').value='00时00分00秒';

    }

    function start()//开始

    {

      int=setInterval(timer,1000);

    }

    //计时

    function timer(){

        second++;

      if(second>=60){

        second=0;

        minute=minute+1;

      }

      if(minute>=60){

        minute=0;

        hour=hour+1;

      }

      document.getElementById('timetext').value=hour+'时'+minute+'分'+second+'秒';

    }

  </script>

</head>

<body>

<div style="text-align: center">

  <input type="text" id="timetext" value="00时00分00秒" readonly><br>

  <button type="button" onclick="start()">开始</button> <button type="button" onclick="stop()">暂停</button> <button type="button" onclick="Reset()">重置</button>

</div>

</body>

</html>
HOUR

js实现计时 时分秒

js实现计时时分秒
