ES6 Class

class

class Person {
  constructor(name, surname) {
    this.name = name
    this.surname = surname
  }
  
  introduce() {
    console.log(`Hi, my name is ${this.name} ${this.surname}`)
  }
  
  static type() {
    console.log("I'm a Person")
  }
}

class Developer extends Person {
  constructor(name, surname, skill) {
    super(name, surname) // Person.constructor
    this.skill = skill
  }
  
  introduce() { // override
    console.log(`Hi, my name is ${this.name} ${this.surname} and I know ${this.skill}`)
  }
}

let mario = new Person('Mario', 'Bros')
mario.introduce() // Hi, my name is Mario Bros
Person.type() // I'm a Person

let luigi = new Developer('Luigi', 'Bros', 'ES6') // inherits every props and methods, even those static
luigi.introduce() // Hi, my name is Luigi Bros and I know ES6
Developer.type() // I'm a Person