app.js

var userScore = 0;
var computerScore =0;
const userScore_span = document.getElementById("user-score");
const computerScore_span = document.getElementById("computer-score");
const scoreBoard_div = document.querySelector(".score-board")
const result_div = document.querySelector(".result > p")
const rock_div = document.getElementById("r")
const paper_div = document.getElementById("p")
const scissors_div = document.getElementById("s")

function getComputerChoice() {
  const choices = ['r', 'p', 's'];
  const randomNumber = Math.floor(Math.random() * 3);

  return choices[randomNumber];
}

function convertToWord(letter) {
  if (letter === "r") return "Rock";
  if (letter === "p") return "Paper";
  return "Scissors";
}

function win(userChoice, computerChoice) {
  const userChoice_div = document.getElementById(userChoice);
  userScore++;
  userScore_span.innerHTML = userScore;
  computerScore_span.innerHTML = computerScore;
  result_div.innerHTML = "You Win! " + convertToWord(userChoice) + " beats " + convertToWord(computerChoice) + "!"
  document.getElementById(userChoice).classList.add('green-glow');
  setTimeout(function() { document.getElementById(userChoice).classList.remove('green-glow')}, 500);
}

function lose(userChoice, computerChoice) {
  const userChoice_div = document.getElementById(userChoice);
  computerScore++;
  computerScore_span.innerHTML = computerScore;
  userScore_span.innerHTML = userScore;
  result_div.innerHTML = "You Lose... " + convertToWord(computerChoice) + " beats " + convertToWord(userChoice) + "."
  document.getElementById(userChoice).classList.add('red-glow');
  setTimeout(function() { document.getElementById(userChoice).classList.remove('red-glow')}, 500);
}

function draw(userChoice, computerChoice) {
  const userChoice_div = document.getElementById(userChoice);
  result_div.innerHTML = "It's a draw."
  document.getElementById(userChoice).classList.add('grey-glow');
  setTimeout(function() { document.getElementById(userChoice).classList.remove('grey-glow')}, 500);
}

function game(userChoice) {
  const computerChoice = getComputerChoice();
  switch (userChoice + computerChoice) {
    case "rs":
    case "pr":
    case "sp":
      win(userChoice, computerChoice);
      break;
    case "rp":
    case "ps":
    case "sr":
      lose(userChoice, computerChoice);
      break;
    case "rr":
    case "pp":
    case "ss":
      draw(userChoice, computerChoice);
      break;
  }
}


function main() {
  rock_div.addEventListener('click', function() {
  game("r");
  })

  paper_div.addEventListener('click', function() {
  game("p");
  })

  scissors_div.addEventListener('click', function() {
  game("s");
  })
}

main();