🟨 JavaScript 6 | 🪨 Rock 📄 Paper  ✂️ Scissors with localStorage (4)
Published: 2024-01-11 05:14:29

Alright my little Rock Paper Scissors game just got another upgrade. Now it stores locally, so the score is kept when I reload the browser 🙂

# My Code

```html
<!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>
    <button onclick="
        score.wins = 0;
        score.losses = 0;
        score.ties = 0;
        localStorage.removeItem('score');
    ">Reset Score</button>
    <script>
        let score = JSON.parse(localStorage.getItem('score')) || {
            wins: 0,
            losses: 0,
            ties: 0
        };

        /*
        if (!score) { // '!score' is the same as 'score === null' here
            score = {
                wins: 0,
                losses: 0,
                ties: 0
            }
        }
        */

        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));

            console.log(`You picked ${playerMove}. Computer picked ${computerMove}. ${result}`)
            console.log(`Wins: ${score.wins}, Losses: ${score.losses}, Ties: ${score.losses}`)
        }

        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>
```