230226(일)

function Test() {};

Test.staticMethod = function() { console.log('스태틱 메서드입니다.') };

Test.prototype.prototypeMethod = function() { console.log('프로토타입 메서드입니다.') };

const test = new Test();

test.instanceMethod = function() { console.log('인스턴스 매서드입니다.') };

const test2 = new Test();

// test2가 직접 갖고있는 메서드는 prototypeMethod()
test2.prototypeMethod();

test2.constructor.staticMethod()

class Animal {
	constructor(name, age) {
		this.name = name;
		this.age = age;
	}
}

class Dog extends Animal {
	constructor(name, age) {
		super(name, age);
	}

	bark() {
		console.log('멍멍!');
	}
}

// 1번 방법
function Animal(name, age) {
	this.name = name;
	this.age = age;
}

function Dog() {
	this.bark = function() {
		console.log('멍멍!');
	}
}

Dog.prototype = new Animal('hodu', 3);

const hodu = new Dog();

console.log(hodu.name); // 'hodu';
console.log(hodu.age); // 3
hodu.bark(); // '멍멍!'

// 2번 방법
function Animal(name, age) {
	this.name = name;
	this.age = age;
}

function Dog(name, age) {
  Animal.call(this, name, age);
	this.bark = function() {
		console.log('멍멍!');
	}
}

const hodu = new Dog('hodu', 3);

console.log(hodu.name); // 'hodu';
console.log(hodu.age); // 3
hodu.bark(); // '멍멍!'