Quiz app
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Brad Traversy
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quiz-app/index.html
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39
quiz-app/index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<link rel="stylesheet" href="style.css" />
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<title>Quiz App</title>
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</head>
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<body>
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<div class="quiz-container" id="quiz">
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<div class="quiz-header">
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<h2 id="question">Question text</h2>
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<ul>
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<li>
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<input type="radio" name="answer" id="a" class="answer">
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<label for="a" id="a_text">Question</label>
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</li>
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<li>
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<input type="radio" name="answer" id="b" class="answer">
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<label for="b" id="b_text">Question</label>
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</li>
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<li>
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<input type="radio" name="answer" id="c" class="answer">
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<label for="c" id="c_text">Question</label>
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</li>
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<li>
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<input type="radio" name="answer" id="d" class="answer">
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<label for="d" id="d_text">Question</label>
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</li>
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</ul>
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</div>
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<button id="submit">Submit</button>
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</div>
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<script src="script.js"></script>
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</body>
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</html>
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quiz-app/script.js
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quiz-app/script.js
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const quizData = [
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{
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question: "Which language runs in a web browser?",
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a: "Java",
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b: "C",
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c: "Python",
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d: "JavaScript",
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correct: "d",
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},
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{
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question: "What does CSS stand for?",
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a: "Central Style Sheets",
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b: "Cascading Style Sheets",
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c: "Cascading Simple Sheets",
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d: "Cars SUVs Sailboats",
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correct: "b",
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},
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{
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question: "What does HTML stand for?",
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a: "Hypertext Markup Language",
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b: "Hypertext Markdown Language",
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c: "Hyperloop Machine Language",
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d: "Helicopters Terminals Motorboats Lamborginis",
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correct: "a",
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},
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{
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question: "What year was JavaScript launched?",
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a: "1996",
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b: "1995",
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c: "1994",
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d: "none of the above",
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correct: "b",
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},
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];
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const quiz = document.getElementById('quiz')
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const answerEls = document.querySelectorAll('.answer')
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const questionEl = document.getElementById('question')
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const a_text = document.getElementById('a_text')
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const b_text = document.getElementById('b_text')
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const c_text = document.getElementById('c_text')
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const d_text = document.getElementById('d_text')
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const submitBtn = document.getElementById('submit')
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let currentQuiz = 0
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let score = 0
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loadQuiz()
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function loadQuiz() {
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deselectAnswers()
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const currentQuizData = quizData[currentQuiz]
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questionEl.innerText = currentQuizData.question
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a_text.innerText = currentQuizData.a
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b_text.innerText = currentQuizData.b
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c_text.innerText = currentQuizData.c
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d_text.innerText = currentQuizData.d
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}
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function deselectAnswers() {
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answerEls.forEach(answerEl => answerEl.checked = false)
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}
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function getSelected() {
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let answer
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answerEls.forEach(answerEl => {
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if(answerEl.checked) {
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answer = answerEl.id
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}
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})
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return answer
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}
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submitBtn.addEventListener('click', () => {
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const answer = getSelected()
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if(answer) {
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if(answer === quizData[currentQuiz].correct) {
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score++
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}
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currentQuiz++
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if(currentQuiz < quizData.length) {
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loadQuiz()
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} else {
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quiz.innerHTML = `
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<h2>You answered ${score}/${quizData.length} questions correctly</h2>
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<button onclick="location.reload()">Reload</button>
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`
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}
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}
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})
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70
quiz-app/style.css
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quiz-app/style.css
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@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;400&display=swap');
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* {
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box-sizing: border-box;
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}
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body {
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background-color: #b8c6db;
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background-image: linear-gradient(315deg, #b8c6db 0%, #f5f7fa 100%);
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font-family: 'Poppins', sans-serif;
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display: flex;
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align-items: center;
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justify-content: center;
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height: 100vh;
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overflow: hidden;
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margin: 0;
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}
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.quiz-container {
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background-color: #fff;
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border-radius: 10px;
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box-shadow: 0 0 10px 2px rgba(100, 100, 100, 0.1);
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width: 600px;
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overflow: hidden;
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}
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.quiz-header {
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padding: 4rem;
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}
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h2 {
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padding: 1rem;
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text-align: center;
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margin: 0;
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}
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ul {
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list-style-type: none;
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padding: 0;
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}
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ul li {
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font-size: 1.2rem;
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margin: 1rem 0;
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}
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ul li label {
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cursor: pointer;
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}
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button {
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background-color: #8e44ad;
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color: #fff;
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border: none;
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display: block;
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width: 100%;
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cursor: pointer;
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font-size: 1.1rem;
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font-family: inherit;
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padding: 1.3rem;
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}
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button:hover {
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background-color: #732d91;
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}
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button:focus {
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outline: none;
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background-color: #5e3370;
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}
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