Method bindUnitSelect

js/ReadingSystem.js:946–956

* 绑定单元选择器事件

()

   * 绑定单元选择器事件
   */
  bindUnitSelect() {
    if (this.bindingFlags.unitSelect || !this.dom.unitSelect) return;
    this.bindingFlags.unitSelect = true;

    on(this.dom.unitSelect, 'change', (event) => {
      const unitIndex = parseInt(event.target.value);
      if (unitIndex >= 0) {
        this.loadUnitByIndex(unitIndex);
      }
    });
  }

  /**
   * 绑定歌词事件