如何在JavaScript中创建包含其他类集合的类

class Collection {
  constructor() {
    this.items = [];
  }

  addItem(item) {
    this.items.push(item);
  }

  removeItem(item) {
    const index = this.items.indexOf(item);
    if (index !== -1) {
      this.items.splice(index, 1);
    }
  }

  getItems() {
    return this.items;
  }
}

class MyClass {
  constructor(name) {
    this.name = name;
    this.collection = new Collection();
  }

  addItemToCollection(item) {
    this.collection.addItem(item);
  }

  removeItemFromCollection(item) {
    this.collection.removeItem(item);
  }

  getCollectionItems() {
    return this.collection.getItems();
  }
}

// 创建 MyClass 实例
const myObject = new MyClass("My Object");

// 向集合中添加项
myObject.addItemToCollection("Item 1");
myObject.addItemToCollection("Item 2");

// 从集合中移除项
myObject.removeItemFromCollection("Item 1");

// 获取集合中的所有项
const collectionItems = myObject.getCollectionItems();
console.log(collectionItems); // 输出: ["Item 2"]