显示音频的缓冲百分比

<audio id="myAudio" src="audio.mp3"></audio>
<div id="bufferProgress"></div>

<script>
  var audio = document.getElementById("myAudio");
  var bufferProgress = document.getElementById("bufferProgress");

  audio.addEventListener("progress", function() {
    var buffered = audio.buffered;
    if (buffered.length > 0) {
      var bufferedEnd = buffered.end(buffered.length - 1);
      var duration = audio.duration;
      var bufferedPercentage = (bufferedEnd / duration) * 100;
      bufferProgress.style.width = bufferedPercentage + "%";
    }
  });
</script>