script.js

'use strict';

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

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

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

  //When there is no input
  if (!guess) {
    displayMessage('⛔️ No Number !!');

    //when the player wins!!
  } else if (guess === secretNumber) {
    document.querySelector('.message').textContent = '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 = highScore;
    }
    //when the guess is too high!! or too low!!
  } else if (guess !== secretNumber) {
    if (score > 1) {
      displayMessage(guess > secretNumber ? 'Too High !!' : 'Too Low!!');
      score -= 1;
      document.querySelector('.score').textContent = score;
    } else {
      displayMessage('You Lost the Game!!');
      document.querySelector('.score').textContent = 0;
    }
  }
});

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