My-Project-Portfolio/flashcard-app.html at main · TechProblemSolver/My-Project-Portfolio · GitHub

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<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>Flashcard App</title>
        <style>
            button {
                background-color: rgb(101, 255, 101);
                border: 1px solid black;
                padding: 12px;
                margin: 6px;
                border-radius: 5px;
                box-shadow: 1px 1px 5px black;
            }
            button:hover {
                background-color: rgb(137, 255, 137);
                box-shadow: 0px 0px 5px black;
            }
            #flashcardHolder {
                background-color: lightskyblue;
                border: 1px solid black;
                border-radius: 4px;
                color: black;
                padding: 100px;
            }
            .flashcard {
                background-color: white;
                color: black;
                border-radius: 4px;
                padding: 20px;
                margin: 12px;
                transition: all 1s;
                width: 500px;
                height: 300px;
                visibility: hidden;
                opacity: 0;
            }
            .flashcard.show {
                visibility: visible;
                opacity: 1;
            }
            .flashcard.hide {
                visibility: hidden;
                opacity: 0;
            }
        </style>
    </head>
    <body>
        <center>
            <h1>Flashcard Learning App</h1>
            <p>Learn MATH the easy way.</p>
            <button id="startQuiz" disabled="true" onclick="getQ()">Start Quiz</button>
        </center>
        <div id="flashcardHolder">
            <center>
                <div id="Flashcard" class="flashcard" onclick="getANS()">
                    <center><h1 style="color: grey; margin-top: 120px;">Start Quiz!</h1></center>
                </div>
            </center>
            <button id="nextBTN" disabled="true" onclick="nextQuestion()">Next &rightarrow;</button><br>
            <label for="color">Pick Color: </label><input type="color" id="color" onclick="activateStart()">
        </div>
        <script>
            const flashcard = document.getElementById('Flashcard');
            const startBtn = document.getElementById('startQuiz');
            const color = document.getElementById('color');
            const nextBtn = document.getElementById('nextBTN');

            function activateStart() {
                startBtn.disabled = false;
            }

            function getQ() {
                flashcard.style.backgroundColor = color.value;
                flashcard.classList.add('show');
                flashcard.classList.add('hide');
                flashcard.classList.toggle('show');
                startBtn.disabled = true;
                nextBtn.disabled = false;
                nextQuestion();
            }

            function nextQuestion() {
                let num1 = Math.round(Math.random() * 100);
                let num2 = Math.round(Math.random() * 100);
                localStorage['num1'] = num1;
                localStorage['num2'] = num2;
                flashcard.classList.add('show');
                flashcard.classList.remove('hide');
                flashcard.innerHTML = `<center><h1 style="color: black; margin-top: 120px;">${num1} + ${num2}</h1></center>`;
            }

            function getANS() {
                flashcard.classList.add('show');
                flashcard.classList.add('hide');
                flashcard.classList.toggle('hide');
                flashcard.innerHTML = `<center><h1 style="color: black; margin-top: 120px;">The answer is: <i style="color: green;">${parseInt(localStorage['num1']) + parseInt(localStorage['num2'])}</i></h1></center>`;
                flashcard.classList.toggle('show');
                localStorage.removeItem('num1');
                localStorage.removeItem('num2');
            }
        </script>
    </body>
</html>