Quiz-App using HTML CSS JS

Quiz-App using HTML CSS JS

HTML

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="style.css" />
    <title>Quiz App</title>
  </head>
  <body>
    <div class="quiz-container" id="quiz">
      <div class="quiz-header">
        <h2 id="question">Question text</h2>
        <ul>
          <li>
            <input type="radio" name="answer" id="a" class="answer">
            <label for="a" id="a_text">Question</label>
          </li>
 
          <li>
            <input type="radio" name="answer" id="b" class="answer">
            <label for="b" id="b_text">Question</label>
          </li>
 
          <li>
            <input type="radio" name="answer" id="c" class="answer">
            <label for="c" id="c_text">Question</label>
          </li>
 
          <li>
            <input type="radio" name="answer" id="d" class="answer">
            <label for="d" id="d_text">Question</label>
          </li>
        </ul>
      </div>
      <button id="submit">Submit</button>
    </div>
    <script src="script.js"></script>
  </body>
</html>

CSS

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;400&display=swap');
 
* {
  box-sizing: border-box;
}
 
body {
  background-color: #b8c6db;
  background-image: linear-gradient(315deg, #b8c6db 0%, #f5f7fa 100%);
  font-family: 'Poppins', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  overflow: hidden;
  margin: 0;
}
 
.quiz-container {
  background-color: #fff;
  border-radius: 10px;
  box-shadow: 0 0 10px 2px rgba(100, 100, 100, 0.1);
  width: 600px;
  overflow: hidden;
}
 
.quiz-header {
  padding: 4rem;
}
 
h2 {
  padding: 1rem;
  text-align: center;
  margin: 0;
}
 
ul {
  list-style-type: none;
  padding: 0;
}
 
ul li {
  font-size: 1.2rem;
  margin: 1rem 0;
}
 
ul li label {
  cursor: pointer;
}
 
button {
  background-color: #8e44ad;
  color: #fff;
  border: none;
  display: block;
  width: 100%;
  cursor: pointer;
  font-size: 1.1rem;
  font-family: inherit;
  padding: 1.3rem;
}
 
button:hover {
  background-color: #732d91;
}
 
button:focus {
  outline: none;
  background-color: #5e3370;
}

JavaScript

const quizData = [
    {
        question: "Which language runs in a web browser?",
        a: "Java",
        b: "C",
        c: "Python",
        d: "JavaScript",
        correct: "d",
    },
    {
        question: "What does CSS stand for?",
        a: "Central Style Sheets",
        b: "Cascading Style Sheets",
        c: "Cascading Simple Sheets",
        d: "Cars SUVs Sailboats",
        correct: "b",
    },
    {
        question: "What does HTML stand for?",
        a: "Hypertext Markup Language",
        b: "Hypertext Markdown Language",
        c: "Hyperloop Machine Language",
        d: "Helicopters Terminals Motorboats Lamborginis",
        correct: "a",
    },
    {
        question: "What year was JavaScript launched?",
        a: "1996",
        b: "1995",
        c: "1994",
        d: "none of the above",
        correct: "b",
    },
];
 
const quiz = document.getElementById('quiz')
const answerEls = document.querySelectorAll('.answer')
const questionEl = document.getElementById('question')
const a_text = document.getElementById('a_text')
const b_text = document.getElementById('b_text')
const c_text = document.getElementById('c_text')
const d_text = document.getElementById('d_text')
const submitBtn = document.getElementById('submit')
 
let currentQuiz = 0
let score = 0
 
loadQuiz()
 
function loadQuiz() {
    deselectAnswers()
 
    const currentQuizData = quizData[currentQuiz]
 
    questionEl.innerText = currentQuizData.question
    a_text.innerText = currentQuizData.a
    b_text.innerText = currentQuizData.b
    c_text.innerText = currentQuizData.c
    d_text.innerText = currentQuizData.d
}
 
function deselectAnswers() {
    answerEls.forEach(answerEl => answerEl.checked = false)
}
 
function getSelected() {
    let answer
 
    answerEls.forEach(answerEl => {
        if(answerEl.checked) {
            answer = answerEl.id
        }
    })
 
    return answer
}
 
submitBtn.addEventListener('click', () => {
    const answer = getSelected()
 
    if(answer) {
        if(answer === quizData[currentQuiz].correct) {
            score++
        }
 
        currentQuiz++
 
        if(currentQuiz < quizData.length) {
            loadQuiz()
        } else {
            quiz.innerHTML = `
                <h2>You answered ${score}/${quizData.length} questions correctly</h2>
 
                <button onclick="location.reload()">Reload</button>
            `
        }
    }
})

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Quiz-App using HTML CSS JS

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