Method updateDuration

js/ReadingSystem.js:595–619

* 更新音频时长

()

   * 更新音频时长
   */
  updateDuration() {
    if (!this.dom.audioPlayer) return;

    if (this.dom.duration) {
      setText(this.dom.duration, formatTime(this.dom.audioPlayer.duration));
    }

    if (
      Number.isFinite(this.state.savedPlayTime) &&
      this.state.savedPlayTime > 0 &&
      this.dom.audioPlayer.duration
    ) {
      const targetTime = Math.min(
        this.state.savedPlayTime,
        this.dom.audioPlayer.duration - 0.1
      );
      
      if (Number.isFinite(targetTime)) {
        this.dom.audioPlayer.currentTime = targetTime;
      }
      
      this.state.savedPlayTime = 0;
      this.updateProgress();
    }
  }

  /**
   * 更新播放按钮状态