JavaScript_ School Catalogue

정세비·2021년 5월 26일
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class, object, getter, setter, inheritance 를 활용

  • super class인 school과 3개의 sub class(primary, middle, high)가 있음
  • school class 만들기(name, level, numberOfStudents 3가지 인자를 가진 constructor)
  • setter의 input (newNumberOfStudents)이 숫자이면 setter의 속성값이, 숫자가 아니면 'Invalid input: numberOfStudents must be set to a Number.'를 log하기
  • quickFacts 메서드를 만들어'SCHOOL NAME educates NUMBER OF STUDENTS students at the LEVEL school level. log할 것. 이때 SCHOOL NAME은 name, NUMBER OF STUDENTS는 numberOfStudents, LEVEL은 level 값으로 바꿔서 출력되도록 할 것
  • static method 만들기(메서드 명: pickSubstituteTeacher, 1개의 인자(substituteTeachers)를 가짐
    • 메서드 내에는 substituteTeachers 배열의 길이보다 작은 0과 1사이의 정수를 무작위로 생성하며, 생성된 색인에서 substitute teacher를 접근하고 return함.
  • extends를 통해 PrimarySchool Class 만들기
  • extends를 통해 HighSchool Class 만들기
  • const lorrainHansbury 만들기
    • Name: 'Lorraine Hansbury'
    • Number of Students: 514
    • Pickup Policy: 'Students must be picked up by a parent, guardian, or a family member over the age of 13.'
  • lorrainHansbury 인스턴스를 quickFacts() 호출하기
  • pickSubstituteTeacher on school에 배열 추가하기
    ['Jamal Crawford', 'Lou Williams', 'J. R. Smith', 'James Harden', 'Jason Terry', 'Manu Ginobli'];
  • const alSmith 만들기
    • Name: 'Al E. Smith'
    • Number of Students: 415
    • Sports Teams: ['Baseball', 'Basketball', 'Volleyball', 'Track and Field']
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 (typeof newNumberOfStudents === 'number') {
      this._numberOfStudents = newNumberOfStudents;
    } 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) {
    let randomTeacher = Math.floor(Math.random() * substituteTeachers.length);
    return substituteTeachers[randomTeacher];
  }
}

// create PrimarySchool Class
class PrimarySchool extends School{
  constructor(name, numberOfStudents, pickupPolicy) {
    super(name, 'primary', numberOfStudents);
    this._pickupPolicy = pickupPolicy;
  }
  get pickupPolicy() {
    return this._pickupPolicy;
  }
}

// create HighSchool Class
class HighSchool extends School {
  constructor(name, numberOfStudents, sportsTeams) {
    super(name, 'high', numberOfStudents)
    this._sportsTeams = sportsTeams;
  }
  get sportsTeams() {
    return this._sportsTeams;
  }
}

const lorraineHansbury = new PrimarySchool('Lorrain Hansbury', 514, 'Students must be picked up by a parent, guardian, or a family member over the age of 13.');

lorraineHansbury.quickFacts(); // Lorrain Hansbury educates 514 students at the primary school level.

School.pickSubstituteTeacher(['Jamal Crawford', 'Lou Williams', 'J. R. Smith', 'James Harden', 'Jason Terry', 'Manu Ginobli']);

const alSmith = new HighSchool('Al E. Smith', 415, ['Baseball', 'Basketball', 'Volleyball', 'Track and Field']);

console.log(alSmith.sportsTeams);
 
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comment-user-thumbnail
2021년 6월 10일

세비님 어디가셨어요 ㅜ_ㅜ 보고싶어요!!!

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