class AudioPlayer { constructor(src, loop = false) { this.audio = new Audio(src); this.audio.loop = loop; this.isPlaying = false; this.hasError = false; this.logError(); } play() { if (!this.hasError) { this.audio.play(); this.isPlaying = true; } } pause() { if (!this.hasError) { this.audio.pause(); this.isPlaying = false; } } stop() { if (!this.hasError) { this.audio.pause(); this.audio.currentTime = 0; this.isPlaying = false; } } logError() { this.audio.onerror = () => { console.error("Your browser does not support audio playback."); this.hasError = true; }; } } 优化上述代码，增加在播放时指定播放次数的属性

可以在构造函数中增加一个参数 `playCount`，默认为1，表示播放次数。同时，可以在 `play()` 方法中添加逻辑，当播放次数大于0时才播放，并且每次播放完成后将播放次数减1。当播放次数为0时，自动停止播放。

优化后的代码如下：

class AudioPlayer {
  constructor(src, loop = false, playCount = 1) {
    this.audio = new Audio(src);
    this.audio.loop = loop;
    this.isPlaying = false;
    this.hasError = false;
    this.playCount = playCount;
    this.logError();
    this.audio.addEventListener("ended", () => {
      if (this.playCount > 0) {
        this.playCount--;
        if (this.playCount === 0) {
          this.stop();
        } else {
          this.play();
        }
      }
    });
  }

  play() {
    if (!this.hasError && this.playCount > 0) {
      this.audio.play();
      this.isPlaying = true;
    }
  }

  pause() {
    if (!this.hasError) {
      this.audio.pause();
      this.isPlaying = false;
    }
  }

  stop() {
    if (!this.hasError) {
      this.audio.pause();
      this.audio.currentTime = 0;
      this.isPlaying = false;
    }
  }

  logError() {
    this.audio.onerror = () => {
      console.error("Your browser does not support audio playback.");
      this.hasError = true;
    };
  }
}

使用示例：

const player = new AudioPlayer("music.mp3", true, 3); // 播放3次
player.play(); // 开始播放