Someone on reddit asked about creating a card game of war with javascript

war.js

/*
Original Reddit Thread
https://www.reddit.com/r/learnjavascript/comments/m1fwq5/im_learning_javascript_and_desperately_need_help/
*/

// The child’s game, War, consists of two players each having a deck of cards.
// For each play, each person turns over the top card in his or her deck.
// The higher card wins that round of play and the winner takes both cards.
// The game continues until one person has all the cards and the other has none.
// Create a program that simulates a modified game of War.
// The computer will play both hands, as PlayerOne and PlayerTwo, and, for each round will generate two random numbers and compare them.
// If the first number is higher, PlayerOne’s score is increased by 1 and if the second number is higher, PlayerTwo’s score is increased by 1.
// If there is a tie, no score is incremented. When one “player” reaches a score of 10, that player should be deemed the winner and the game ends.
// The range of numbers should be 1-13 to simulate the values of cards in the deck.

function playWar() {
  let winningScore = 10;
  const player1 = new player();
  const player2 = new player();

  while(!haveWinner()) {
    player1.getCard();
    player2.getCard();

    console.log('\n');
    console.log('player1 card:', player1.card + 1);
    console.log('player2 card:', player2.card + 1);

    if (player1.card === player2.card) {
      console.log('tie round');
      continue;
    }
    if (player1.card > player2.card) {
      console.log('player1 scored');
      player1.score++;
    } else {
      console.log('player2 scored');
      player2.score++;
    }
  }

  console.log('\n');
  console.log('==== FINAL SCORES ====');
  console.log('player1:', player1.score);
  console.log('player2:', player2.score);

  const winner = player1.score > player2.score ? 'player1' : 'player2';
  console.log(winner, 'won! 🏆');

  function haveWinner() {
    return player1.score >= winningScore || player2.score >= winningScore;
  }
}

function player() {
  let deck = getShuffledDeck();
  // console.log('player', deck);

  return {
    getCard() {
      if (!deck.length) {
        deck = getShuffledDeck();
      }
      this.card = deck.pop();
    },
    score: 0,
    card: 0,
  }
}

function getShuffledDeck() {
  const deck = [...Array(4)].map(i => [...Array(13).keys()]).flat();
  return shuffle(deck);
}

function shuffle(arr) {
  return arr.sort(() => Math.random() - 0.5);
}