2017년 11월 23일

7-1/ class 연습

연습문제 1

아래 자바스크립트를 타입스크립트로 바꾸시오


function Car(name) {
  this.name = name;
  this.speed = 0;
 
  this.honk = function () {
    console.log('부우우웅');
  };
 
  this.accelerate = function (speed) {
    this.speed = this.speed + speed;
  };
}
 
var car = new Car('BENZ');
car.honk();
console.log(car.speed);
car.accelerate(10);
console.log(car.speed);

1차


class Car {
  constructor(public name: string) {}
  public speed: number = 0;
  public honk(): void {
    console.log('부우우웅');
  }
  public accelerate(speed) {
    this.speed = this.speed + speed;
  }
}
 
const car = new Car('BENZ');
car.honk();
console.log(car.speed);
car.accelerate(10);
console.log(car.speed);

2차


class Car {
  constructor(private name: string) {}
  private _speed: number = 0;
  public honk(): void {
    console.log('부우우웅');
  }
  public accelerate(speed) {
    this._speed = this.speed + speed;
  }
 
  get speed(): number {
    return this._speed;
  }
}
 
const car = new Car('BENZ');
car.honk();
console.log(car.speed);
car.accelerate(10);
console.log(car.speed);

3차


interface ICar {
  honk(): void;
  accelerate(speed: number): void;
}
class Car {
  constructor(private name: string) {}
  private _speed: number = 0;
 
  public honk(): void {
    console.log('부우우웅');
  }
 
  public accelerate(speed) {
    this._speed = this._speed + speed;
  }
  get speed(): number {
    return this._speed;
  }
}
 
const car = new Car('BENZ');
car.honk();
console.log(car.speed);
car.accelerate(10);
console.log(car.speed);