script.js

'use strict';

let secretNumber = Math.trunc(Math.random() * 20) + 1;
let score = 20;
let highScore = 0;

function displayMessage(message) {
  document.querySelector('.message').textContent = message;
}

function changeScore(score) {
  document.querySelector('.score').textContent = score;
}

document.querySelector('.check').addEventListener('click', function () {
  const guess = Number(document.querySelector('.guess').value);

  // When there is no input
  if (!guess) {
    displayMessage('You need to enter a number! 😄');

    // When the player wins
  } else if (guess === secretNumber) {
    displayMessage('You entered the correct number! 🎉');
    document.querySelector('.number').textContent = secretNumber;

    document.querySelector('body').style.backgroundColor = '#60b347';
    document.querySelector('.number').style.width = '30rem';

    if (score > highScore) {
      highScore = score;
      document.querySelector('.highscore').textContent = score;
    }

    // When the guess is wrong
  } else if (guess !== secretNumber) {
    if (score > 1) {
      displayMessage(
        guess > secretNumber ? 'Too high, try again!' : 'Too low, try again!'
      );

      score--;
      changeScore(score);
    } else {
      displayMessage('You lost the game!');
      changeScore(0);
    }
  }
});

document.querySelector('.again').addEventListener('click', function () {
  score = 20;
  secretNumber = Math.trunc(Math.random() * 20) + 1;
  changeScore(score);
  document.querySelector('.number').textContent = '?';
  displayMessage('Start guessing...');
  document.querySelector('.guess').value = '';
  document.querySelector('body').style.backgroundColor = '#222';
  document.querySelector('number').style.width = '15rem';
});