[JS] 상속

 

 

//상속
class Fish {
    constructor(name, age) {
        this.name = name;
        this.age = age;
    }
    swim() {
        console.log('어푸어푸 붕어빵');
    }
}

class Shark extends Fish {

}

const fish1 = new Fish('붕어빵1', 1);
const shark1 = new Shark('상어빵1', 1);

console.log(`상어빵: ${shark1.name}, ${shark1.age}살`);

 

 

 

// 부모 클래스
class Person {
    constructor(name, age) {
        this.name = name;
        this.age = age;
    }

    greet() {
        console.log("Hello, my name is " + this.name);
    }
}

// 자식 클래스
class Student extends Person {
    constructor(name, age, grade) {
        // 부모 클래스의 생성자 호출
        super(name, age);
        this.grade = grade;
    }

    study() {
        console.log(this.name + " is studying in grade " + this.grade);
    }
}

// 객체 생성 및 메서드 호출
const student1 = new Student("Alice", 20, "A");
student1.greet(); // Hello, my name is Alice
student1.study(); // Alice is studying in grade A