[자바스크립트]클래스의 매서드와 constrcutor 메서드

class Person {
  constructor (name, age, married = false) {
    this.name = name;
    this.age = age;
    this.married = married;
  }
}

const person1 = new Person('박영희', 30, true);
const person2 = new Person('오동수', 18);
console.log(person1, person2);

class Dog {
  bark () {
    return '멍멍';
  }
}
const badugi = new Dog();
console.log(badugi, badugi.bark());

function Dog2 () {
  this.bark = function () {
    return '멍멍';
  }
}
const badugi = new Dog2();
console.log(badugi, badugi.bark());