Hey, I am Ajink, and today in this blog, we’re going to create an engaging and interactive quiz using HTML, CSS, and JavaScript. The questions for the quiz are stored in a questions.json file, allowing for easy management and modification.
HTML Code:
<!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>Interactive Quiz</title>
</head>
<body>
<div class="quiz-container">
<h1>Interactive Quiz</h1>
<div id="question-container" class="question-container"></div>
<button id="next-btn" onclick="nextQuestion()">Next</button>
<p id="result"></p>
</div>
<script src="app.js"></script>
</body>
</html>
HTML Code Explanation:
- The HTML structure consists of a container for the quiz, a div to display the questions dynamically, a “Next” button, and a paragraph to show the quiz result.
CSS Code:
body {
margin: 0;
font-family: 'Arial', sans-serif;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
background-color: #f0f0f0;
}
.quiz-container {
background-color: #fff;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
border-radius: 8px;
padding: 20px;
text-align: center;
}
.question-container {
margin: 20px 0;
}
button {
background-color: #3498db;
color: #fff;
padding: 10px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
}
#result {
font-weight: bold;
}
CSS Code Explanation:
- The CSS provides styling for the quiz container, question display, and the “Next” button.
JavaScript Code:
let currentQuestionIndex = 0;
let score = 0;
document.addEventListener('DOMContentLoaded', function () {
loadQuestion(currentQuestionIndex);
});
function loadQuestion(index) {
const questionContainer = document.getElementById('question-container');
const nextBtn = document.getElementById('next-btn');
const resultElement = document.getElementById('result');
fetch('questions.json')
.then(response => response.json())
.then(data => {
const questions = data.questions;
if (index >= 0 && index < questions.length) {
const currentQuestion = questions[index];
questionContainer.innerHTML = `
<h2>${currentQuestion.question}</h2>
<ul>
${currentQuestion.options.map(option => `<li onclick="checkAnswer('${option}')">${option}</li>`).join('')}
</ul>
`;
resultElement.innerText = '';
nextBtn.style.display = 'none';
} else {
showResult();
}
})
.catch(error => console.error('Error loading questions:', error));
}
function checkAnswer(selectedOption) {
const questionContainer = document.getElementById('question-container');
const nextBtn = document.getElementById('next-btn');
const resultElement = document.getElementById('result');
fetch('questions.json')
.then(response => response.json())
.then(data => {
const currentQuestion = data.questions[currentQuestionIndex];
if (currentQuestion.correctAnswer === selectedOption) {
score++;
}
questionContainer.innerHTML = `<p>You selected: ${selectedOption}</p>`;
resultElement.innerText = `Score: ${score}`;
nextBtn.style.display = 'block';
})
.catch(error => console.error('Error checking answer:', error));
}
function nextQuestion() {
currentQuestionIndex++;
loadQuestion(currentQuestionIndex);
}
function showResult() {
const questionContainer = document.getElementById('question-container');
const nextBtn = document.getElementById('next-btn');
const resultElement = document.getElementById('result');
questionContainer.innerHTML = '';
nextBtn.style.display = 'none';
resultElement.innerText = `Quiz completed! Your final score is ${score}.`;
}
JavaScript Code Explanation:
- The JavaScript code loads questions from the
questions.jsonfile. - The
loadQuestionfunction dynamically generates HTML for the current question and options. - The
checkAnswerfunction checks the selected answer and updates the score. - The
nextQuestionfunction moves to the next question. - The
showResultfunction displays the final quiz result.
questions.json:
{
"questions": [
{
"question": "What is the capital of France?",
"options": ["Berlin", "Paris", "Madrid", "Rome"],
"correctAnswer": "Paris"
},
{
"question": "Which planet is known as the Red Planet?",
"options": ["Venus", "Mars", "Jupiter", "Saturn"],
"correctAnswer": "Mars"
},
{
"question": "What is the largest mammal in the world?",
"options": ["Elephant", "Blue Whale", "Giraffe", "Hippopotamus"],
"correctAnswer": "Blue Whale"
}
]
}
Conclusion:
In this blog, we successfully created an interactive quiz using HTML, CSS, and JavaScript. The questions are stored in a questions.json file, making it easy to update and modify the quiz content. Don’t forget to subscribe to my YouTube channel at youtube.com/@ajink21 for more exciting tutorials.
Thanks for reading, and if you have any doubts, feel free to comment!
