app-v1-pt3.js

document.querySelector('[data-player1-name]').textContent = player1Name;
document.querySelector('[data-player1-score]').textContent = player1Score;
document.querySelector('[data-player2-name]').textContent = player2Name;
document.querySelector('[data-player2-score]').textContent = player2Score;
document.querySelector('[data-parsed-score]').textContent = getScore();

document.querySelector('[data-player1-add-score]').addEventListener('click', function () {
  player1Score++;
  document.querySelector('[data-parsed-score]').textContent = getScore();
  document.querySelector('[data-player1-score]').textContent = player1Score;
});

document.querySelector('[data-player2-add-score]').addEventListener('click', function () {
  player2Score++;
  document.querySelector('[data-parsed-score]').textContent = getScore();
  document.querySelector('[data-player2-score]').textContent = player2Score;
});

document.querySelector('[data-score-reset]').addEventListener('click', function () {
  player1Score = 0;
  player2Score = 0;

  document.querySelector('[data-parsed-score]').textContent = getScore();
  document.querySelector('[data-player1-score]').textContent = player1Score;
  document.querySelector('[data-player2-score]').textContent = player2Score;
});