Alright, as promised yesterday I’m now going to use my newly learned JavaScript to improve the Rock Paper Scissors game from a few days ago. Lets do it!
My Code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Rock Paper Scissors</title>
</head>
<body>
<p>Rock Paper Scissors</p>
<button onclick="
playGame('rock')
">Rock</button>
<button onclick="
playGame('paper');
">Paper</button>
<button onclick="
playGame('scissors');
">Scissors</button>
<p class="js-result">_</p>
<p class="js-moves">_</p>
<p class="js-score"></p>
<button onclick="
score.wins = 0;
score.losses = 0;
score.ties = 0;
localStorage.removeItem('score');
document.querySelector('.js-result').innerHTML = '_'
document.querySelector('.js-moves').innerHTML = '_'
updateScoreElement();
">Reset Score</button>
<script>
let score = JSON.parse(localStorage.getItem('score')) || {
wins: 0,
losses: 0,
ties: 0
};
updateScoreElement();
function playGame(playerMove) {
const computerMove = pickComputerMove();
let result = '';
if (playerMove === 'scissors') {
if (computerMove === 'rock') {
result = 'You lose.';
} else if (computerMove === 'paper') {
result = 'You win.';
} else if (computerMove === 'scissors') {
result = 'Tie.';
}
} else if (playerMove === 'paper') {
if (computerMove === 'rock') {
result = 'You win.';
} else if (computerMove === 'paper') {
result = 'Tie.';
} else if (computerMove === 'scissors') {
result = 'You lose.';
}
} else if (playerMove === 'rock') {
if (computerMove === 'rock') {
result = 'Tie.';
} else if (computerMove === 'paper') {
result = 'You lose.';
} else if (computerMove === 'scissors') {
result = 'You win.';
}
}
if (result === 'You win.') {
score.wins++;
} else if (result === 'You lose.') {
score.losses++;
} else if (result === 'Tie.') {
score.ties++;
}
localStorage.setItem('score', JSON.stringify(score));
updateResultElement(result);
updateMovesElement(playerMove, computerMove);
updateScoreElement();
}
function updateResultElement(result) {
document.querySelector('.js-result')
.innerHTML = `${result}`;
}
function updateMovesElement(playerMove, computerMove) {
document.querySelector('.js-moves')
.innerHTML = `You picked ${playerMove}. Computer picked ${computerMove}.`;
}
function updateScoreElement() {
document.querySelector('.js-score')
.innerHTML = `Wins: ${score.wins}, Losses: ${score.losses}, Ties: ${score.ties}`;
}
function pickComputerMove() {
let computerMove = '';
const randomNumber = Math.random();
if (randomNumber >= 0 && randomNumber < 1 / 3) {
computerMove = 'rock';
} else if (randomNumber >= 1 / 3 && randomNumber < 2 / 3) {
computerMove = 'paper';
} else {
computerMove = 'scissors';
};
return computerMove;
}
</script>
</body>
</html>
This code gives me a strange feeling of satisfaction. Before using JS was so weird, and now I know the syntax to manipulate HTML. 😌😌😌 can’t wait to continue the course later today or tomorrow!
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