JS-Practice/09-rock-paper-scissors.html at main · MrRahimie/JS-Practice · GitHub

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<!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);
        updateScoreElement();
    ">Reset Score</button>

    <p><a href="">Click here</a> to see the final version of the project</p>

    <script>

        //save the last time scores
        //using default operator
        let score = JSON.parse(localStorage.getItem('score')) ||
        {
            wins: 0,
            losses: 0,
            ties: 0,
        };

        updateScoreElement();


        /*
        //AVOID NULL VALUE everytime the score refresh to ZERO
        if(!score){
            score = {
                wins: 0,
                losses: 0,
                ties: 0,
            };
        }
        */

        function playGame(playerMove){
            const computerMove = pickComputerMove();

            let result ='';

            if(playerMove === 'scissors'){
                if(computerMove === playerMove){
                    result = 'You lose';
                }else if(computerMove === 'scissors'){
                    result = 'tie'
                }else{
                    result = 'You win'
                }

            }else if(playerMove === 'paper'){
                if(computerMove === 'rock'){
                    result = 'You win';
                }else if(computerMove === 'scissors'){
                    result = 'You lose'
                }else{
                    result = 'Tie'
                }

            }else{
                if(computerMove === 'rock'){
                    result = 'Tie';
                }else if(computerMove === 'scissors'){
                    result = 'You win'
                }else{
                    result = 'You lose'
                }
            }

            //UPDATE SCORE
            if(result === 'You win'){
                score.wins++;
            }else if(result === 'You lose'){
                score.losses++;
            }else{
                score.ties++;
            }

            //save score to local Storage
            localStorage.setItem('score', JSON.stringify(score));

            //Save score to html page
            updateScoreElement();

            document.querySelector('.js-result')
            .innerHTML = result;

            document.querySelector('.js-moves')
            .innerHTML = `You ${playerMove} - ${computerMove} Computer`;


           }

        function updateScoreElement(){
            document.querySelector('.js-score')
            .innerHTML = `Wins: ${score.wins}, Losses: ${score.losses}, Tie: ${score.ties}`;
        }

        //implies SCOPE concept
        function pickComputerMove(){

        const randomNumber = Math.random();

        let computerMove = '';


        //if-else create SCOPE where limit variables exists
        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>