我想創建一個名為 SchoolCatalog 的類，它將包含學校的集合，例如為小學、初中和高中創建一個 SchoolCatalog 實例。（這是 Code Academy Introduction To JavaScript 中的問題之一）。但是，對于如何制作目錄來容納論壇中的所有課程，他們沒有適當的指導。因此，如果有人可以幫助我，我將不勝感激。class School {  constructor(name, level, numberOfStudents) {    this._name = name    this._level = level    this._numberOfStudents = numberOfStudents   }    get name() {    return this._name  }    get level() {    return this._level  }    get numberOfStudents() {    return this._numberOfStudents   }      set numberOfStudents(studentsNumber) {    if (typeof studentNumber === 'number')      this._numberOfStudents = studentsNumber    else      console.log(`Invalid input: numberOfStudents must be set to a Number.`)  }    quickFacts() {    console.log(`${this._name} educates ${this._numberOfStudents} students at the ${this._level} school level.`)  }    static pickSubstituteTeacher(substituteTeachers) {    const randomTeacher = Math.floor(Math.random() * substituteTeachers.length)    console.log(substituteTeachers[randomTeacher])  }  }// Primary Schoolclass PrimarySchool extends School {  constructor(name, numberOfStudents, pickupPolicy) {    super(name, 'primary', numberOfStudents)    this._pickupPolicy = pickupPolicy  }    get pickupPolicy() {    return this._pickupPolicy  }}class HighSchool extends School {  constructor(name, numberOfStudents, sportsTeams) {    super(name,'high', numberOfStudents)    this._sportsTeams = sportsTeams  }    get sportsTeams() {    this._sportsTeams.forEach(team => {      console.log(team)    })  }}