Classical-Inheritance-Extends.js

class Player {
    constructor(name){
        this.name = name;
        this.goalsScored = 0;
        this.chances = 10;
    }

    hit(){
        if(this.chances === 0){
            return console.log("Game is over");
        }
        this.goalsScored++;
        this.chances--;
    }

    miss(){
        if(this.chances === 0){
            return console.log("Game is over");
        }
        this.chances--;
    }
}

class OutFieldPlayer extends Player{
  constructor(name){
    super(name);
    this.savesMade  = 0;
  }

  save(){
    this.savesMade += 1;
  }
}

var DeGea = new OutFieldPlayer("DeGea");
DeGea.save();
DeGea.hit();
console.log(DeGea.savesMade); //1
console.log(DeGea.goalsScored); //1

var Ronaldo = new Player("Christiano Ronaldo");
Ronaldo.hit();
console.log(Ronaldo.goalsScored) //1
console.log(Ronaldo.chances) //9