把视频设置为默认低速播放 - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
</head>
<body>

  <video id="myVideo" width="320" height="240" controls>
  <source src="/examples/movie.mp4" type="video/mp4">
    <source src="/examples/movie.ogg" type="video/ogg">
    您的浏览器不支持 video 标签。
</video><br>
  <button onclick="getPlaySpeed()" type="button">默认播放速度？</button>
  <button onclick="setPlaySpeed()" type="button">设置以慢速播放</button>
  <script>
    var x = document.getElementById("myVideo");

    function getPlaySpeed() {
      alert(x.defaultPlaybackRate);
    }

    function setPlaySpeed() {
      x.defaultPlaybackRate = 0.5;
      x.load();
    }
  </script>

</body>
</html>
        