School Database (classes).js

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 (newNumberOfStudents) {
      if (newNumberOfStudents.isNaN()) {
        console.log('Invalid input: numberOfStudents must be set to a Number.')
      } else {
        this._numberOfStudents = newNumberOfStudents
      }
    }
    quickFacts () {
      console.log(`${this.name} educates ${this.numberOfStudents} students at the ${this.level} school level.`)
    }
    static pickSubstituteTeacher (substituteTeachers) {
      let number = Math.floor(Math.random()*substituteTeachers.length)
      return substituteTeachers[number]
    }
  }
  
  class Primary extends School{
    constructor (name, numberOfStudents, pickupPolicy) {
      super(name,'primary',numberOfStudents)
      this._pickupPolicy = pickupPolicy
    }
    get pickupPolicy () {
      return this._pickupPolicy
    }
  }
  class Middle extends School {
    constructor (name, numberOfStudents) {
      super(name,'middle',numberOfStudents)
    }
  }
  
  class High extends School {
    constructor (name, numberOfStudents, sportsTeams) {
      super(name, 'high', numberOfStudents)
      this._sportsTeams = sportsTeams
    }
    get sportsTeams () {
      return this._sportsTeams
    }
  }
  
  const lorraineHansbury = new Primary('Lorraine Hansbury',514, 'Students must be picked up by a parent, guardian, or a family member over the age of 13.')
  lorraineHansbury.quickFacts()
  console.log(School.pickSubstituteTeacher(['Jamal Crawford', 'Lou Williams', 'J. R. Smith', 'James Harden', 'Jason Terry', 'Manu Ginobli']))
  
  const alSmith = new High('Al E. Smith',415, ['Baseball','Basketball','Volleyball','Track and Field'])
  console.log(alSmith.sportsTeams)