Markdium-JavaScript - The prototype chain in depth

Markdium-JSX.jsx

const playerFunctions = {
  setScore(newScore) {
    this.score = newScore;
  }
}

function createPlayer(userName, score) {
  const newPlayer = Object.create(playerFunctions);
  newPlayer.userName = userName;
  newPlayer.score = score;
  return newPlayer;
}

const paidPlayerFunctions = {
  setUserName(newName) {
    this.userName = newName;
  }
}

// link paidPlayerFunctions object to createPlayer object
Object.setPrototypeOf(paidPlayerFunctions, playerFunctions);

function createPaidPlayer(userName, score, balance) {
  const paidPlayer = createPlayer(name, score);
  // we need to change the pointer here
  Object.setPrototypeOf(paidPlayer, paidPlayerFunctions);
  paidPlayer.balance = balance;
  return paidPlayer
}

const player1 = createPlayer('sag1v', 700);
const paidPlayer = createPaidPlayer('sag1v', 700, 5);

console.log(player1)
console.log(paidPlayer)