改变视频的 URL - 在线编辑器

          <video id="myVideo" controls src="/examples/movie.ogg">
  您的浏览器不支持 video 标签。
</video>
<p>点击按钮修改视频的 URL。</p>
<p id="demo"></p>
<button onclick="myFunction()">点我</button>
<script>
  var x = document.getElementById("myVideo");

  function myFunction() {
    isSupp = x.canPlayType("video/mp4");
    if (isSupp == "") {
      x.src = "/examples/mov_bbb.ogg";
    } else {
      x.src = "/examples/mov_bbb.mp4";
    }
    x.load();
    document.getElementById("demo").innerHTML = "Video Courtesy of Big Buck Bunny - www.bigbuckbunny.org";
  }
</script>
        