How To Build A Quiz App With JavaScript for Beginners

Welcome to “How To Build A Quiz App With JavaScript for Beginners”! In the vast landscape of web development, JavaScript remains a cornerstone language for creating interactive and dynamic web applications. If you’re new to JavaScript and eager to embark on your coding journey, creating a quiz app is an exciting and practical starting point. In this comprehensive guide, we will walk through each step of building a simple yet engaging quiz application using JavaScript, HTML, and CSS.

Whether you’re a seasoned developer looking to expand your skill set or an aspiring coder taking your first steps into the world of programming, this tutorial is designed to provide you with a solid foundation in JavaScript while guiding you through the process of creating a functional quiz app from scratch.

By the end of this tutorial, you’ll not only have a fully functional quiz app at your disposal but also a deeper understanding of core JavaScript concepts, including DOM manipulation, event handling, and data management. So, without further ado, let’s dive into the exciting world of web development and start building our JavaScript quiz app together!

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Build A Quiz App With JavaScript for Beginners

Project Prerequisites

Before we delve into building our JavaScript quiz app, let’s ensure that you have everything you need to get started. Here are the prerequisites for this project:

Basic Understanding of HTML, CSS, and JavaScript: While this tutorial is geared towards beginners, having a foundational understanding of HTML (Hypertext Markup Language), CSS (Cascading Style Sheets), and JavaScript will be beneficial. Familiarity with concepts such as variables, functions, arrays, and DOM manipulation will help you grasp the concepts more easily.
Text Editor: You’ll need a text editor to write your HTML, CSS, and JavaScript code. Popular text editors include Visual Studio Code, Sublime Text, Atom, and Notepad++.
Web Browser: A modern web browser such as Google Chrome, Mozilla Firefox, Safari, or Microsoft Edge will be necessary to view and test your quiz app.
Terminal or Command Prompt (Optional): While not strictly required, having access to a terminal or command prompt can be helpful for running your project locally, especially if you plan to use a local development server.
Internet Connection (Optional): An internet connection may be needed for accessing online resources, documentation, or additional learning materials related to JavaScript and web development.

Once you have these prerequisites in place, you’re ready to embark on your journey to build a quiz app with JavaScript. Let’s move on to setting up the project and diving into the exciting world of web development!

Step 1: Setting Up The Project

Setting up your project environment is the first crucial step in building your JavaScript quiz app. Let’s go through the necessary steps to get your project up and running:

Create a New Directory: Start by creating a new directory (folder) on your computer where you’ll store all the files related to your quiz app project. You can name this directory whatever you like, such as “quiz-app”.
Open Your Text Editor: Open your preferred text editor (e.g., Visual Studio Code, Sublime Text, Atom) to begin creating your project files.
Create HTML File: Inside your project directory, create a new file named index.html. This file will serve as the main entry point for your quiz app and will contain the HTML structure of your application.
Create CSS File: Next, create a new file named style.css within the same project directory. This file will contain the styles and layout rules to visually enhance your quiz app.
Create JavaScript File: Finally, create a new file named script.js in your project directory. This file will contain the JavaScript code responsible for the interactive behavior and functionality of your quiz app.

Your project directory should now contain the following files:

quiz-app/
│
├── index.html
├── style.css
└── script.js

With the basic project structure in place, you’re now ready to start building the HTML structure of your quiz app in the next step. Keep your text editor open, and let’s move on to the next stage of building our JavaScript quiz app!

Step 2: Building The Quiz Structure With HTML

Now that we’ve set up the project files, it’s time to create the HTML structure for our quiz app. The HTML markup will define the layout and content of our quiz, including the questions, options, and buttons. Follow these steps to build the quiz structure with HTML:

HTML Skeleton:
Open the index.html file in your text editor and create the basic HTML skeleton by adding the following code:

   <!DOCTYPE html>
   <html lang="en">
   <head>
       <meta charset="UTF-8">
       <meta name="viewport" content="width=device-width, initial-scale=1.0">
       <title>JavaScript Quiz App</title>
       <link rel="stylesheet" href="style.css">
   </head>
   <body>
       <header>
           <h1>JavaScript Quiz App</h1>
       </header>
       <main>
           <!-- Quiz Content Goes Here -->
       </main>
       <footer>
           <!-- Footer Content Goes Here -->
       </footer>
       <script src="script.js"></script>
   </body>
   </html>

This code sets up the basic structure of an HTML document, including the document type declaration, language attribute, metadata, title, external CSS link, and JavaScript script tag.

Quiz Container:
Inside the <main> element, create a <div> with a class of quiz-container to serve as the container for the quiz content:

   <main>
       <div class="quiz-container">
           <!-- Quiz Content Goes Here -->
       </div>
   </main>

Quiz Questions:
Within the quiz-container, add an empty <div> with a class of question to display the quiz questions dynamically:

   <div class="quiz-container">
       <div class="question">
           <!-- Question Content Goes Here -->
       </div>
   </div>

Options List:
Below the <div class="question">, create an unordered list <ul> with a class of options to display the answer options for each question:

   <div class="question">
       <!-- Question Content Goes Here -->
   </div>
   <ul class="options">
       <!-- Answer Options Go Here -->
   </ul>

Submit Button:
Finally, add a submit button below the options list to allow users to submit their answers:

   <button id="submit-btn">Submit</button>

Now that we’ve built the basic HTML structure for our quiz app, we can move on to styling the quiz interface using CSS in the next step.

Step 3: Styling the Quiz With CSS

With the HTML structure of our quiz app in place, it’s time to add some style to make it visually appealing and user-friendly. In this step, we’ll use CSS (Cascading Style Sheets) to customize the appearance of our quiz interface. Follow these steps to style the quiz:

Create CSS File:
Open the style.css file in your text editor. This is where we’ll write the CSS code to style our quiz app.
Basic Styling:
Start by setting some basic styles to improve the overall layout and appearance of the quiz app. For example, you can set the font family, background color, and text color for the entire page:

   body {
       font-family: Arial, sans-serif;
       background-color: #f9f9f9;
       color: #333;
       margin: 0;
       padding: 0;
   }

Header Styling:
Customize the styles for the header section, including the title of the quiz app:

   header {
       background-color: #007bff;
       color: #fff;
       padding: 20px;
       text-align: center;
   }

   header h1 {
       margin: 0;
       font-size: 24px;
   }

Quiz Container Styling:
Style the container that holds the quiz questions and options:

   .quiz-container {
       background-color: #fff;
       border-radius: 8px;
       box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
       margin: 20px auto;
       max-width: 600px;
       padding: 20px;
   }

Question Styling:
Customize the appearance of the quiz questions:

   .question {
       font-size: 20px;
       margin-bottom: 20px;
   }

Options Styling:
Style the answer options list:

   .options {
       list-style-type: none;
       padding: 0;
   }

   .options li {
       margin-bottom: 10px;
   }

Submit Button Styling:
Customize the appearance of the submit button:

   #submit-btn {
       background-color: #007bff;
       border: none;
       color: #fff;
       cursor: pointer;
       font-size: 16px;
       padding: 10px 20px;
       border-radius: 4px;
   }

   #submit-btn:hover {
       background-color: #0056b3;
   }

Footer Styling (Optional):
Optionally, you can style the footer section of the quiz app:

   footer {
       background-color: #007bff;
       color: #fff;
       padding: 20px;
       text-align: center;
   }

Feel free to customize these styles further to match your desired look and feel for the quiz app. Once you’ve applied the CSS styles, save the style.css file and proceed to the next step to initialize the quiz with JavaScript.

Step 4: Initializing the Quiz using JavaScript

Now that we have set up the HTML structure and styled our quiz app, it’s time to add interactivity using JavaScript. In this step, we will initialize the quiz by populating the questions and options dynamically. Follow these steps to initialize the quiz with JavaScript:

Link JavaScript File:
Open the index.html file and add a script tag to link your JavaScript file at the bottom of the body element:

   <script src="script.js"></script>

Create Questions Array:
Open the script.js file in your text editor. Define an array named questions to store the quiz questions and their respective options. Each question object in the array should contain the question text and an array of options.

   const questions = [
       {
           question: "What is the capital of France?",
           options: ["Paris", "London", "Berlin", "Rome"],
           correctAnswer: "Paris"
       },
       // Add more questions here...
   ];

Initialize Quiz Function:
Define a function named initQuiz() to initialize the quiz by populating the questions and options dynamically. Inside this function, select the quiz container element from the HTML and loop through the questions array to create HTML elements for each question and its options.

   function initQuiz() {
       const quizContainer = document.querySelector('.quiz-container');

       questions.forEach((question, index) => {
           // Create question element
           const questionElement = document.createElement('div');
           questionElement.classList.add('question');
           questionElement.textContent = `Question ${index + 1}: ${question.question}`;

           // Create options list
           const optionsList = document.createElement('ul');
           optionsList.classList.add('options');

           question.options.forEach(option => {
               const optionItem = document.createElement('li');
               optionItem.textContent = option;
               optionsList.appendChild(optionItem);
           });

           // Append question and options to quiz container
           quizContainer.appendChild(questionElement);
           quizContainer.appendChild(optionsList);
       });
   }

   // Call initQuiz function to initialize the quiz
   initQuiz();

Testing:
Save the script.js file and open the index.html file in your web browser. You should see the quiz questions and options displayed on the page, initialized dynamically using JavaScript.

With the quiz initialized, we can now move on to the next step to handle user answers and validate them against the correct answers using JavaScript.

Step 5: JavaScript – Handling User Answers

Now that we have initialized the quiz with questions and options, it’s time to handle user answers. In this step, we will add functionality to capture the user’s selections and validate them against the correct answers. Follow these steps to handle user answers using JavaScript:

Event Listener for Options:
Inside the initQuiz() function in your script.js file, add an event listener to the options list to capture the user’s selection when they click on an option. We’ll use event delegation to listen for clicks on the entire options list and identify which option was clicked.

   function initQuiz() {
       // Existing code...

       // Event listener for options list
       quizContainer.addEventListener('click', event => {
           if (event.target.tagName === 'LI') {
               const selectedOption = event.target.textContent;
               console.log('Selected option:', selectedOption);

               // Call function to handle selected option
               handleUserAnswer(selectedOption);
           }
       });
   }

Handle User Answer Function:
Define a function named handleUserAnswer(selectedOption) to handle the user’s selected option. Inside this function, compare the selected option with the correct answer for the current question and provide feedback to the user.

   function handleUserAnswer(selectedOption) {
       const currentQuestion = questions[currentQuestionIndex];

       if (selectedOption === currentQuestion.correctAnswer) {
           console.log('Correct answer!');
           // Provide feedback for correct answer (e.g., change option color)
       } else {
           console.log('Incorrect answer!');
           // Provide feedback for incorrect answer (e.g., change option color, display correct answer)
       }

       // Move to the next question (optional)
       // moveToNextQuestion();
   }

Testing:
Save the script.js file and refresh your browser. Now, when you click on an option, you should see a message in the console indicating whether your answer was correct or incorrect.

With this functionality in place, our quiz app can now handle user answers and provide feedback accordingly. In the next step, we’ll implement navigation to move between questions dynamically.

Step 6: JavaScript – Navigating Questions

Now that we can handle user answers, let’s implement the functionality to navigate between questions dynamically. In this step, we’ll add event listeners to allow users to move to the next question or go back to the previous one. Follow these steps to implement navigation using JavaScript:

Global Variables:
Declare global variables to keep track of the current question index and the total number of questions:

   let currentQuestionIndex = 0;
   const totalQuestions = questions.length;

Next and Previous Buttons (Optional):
If you want to provide buttons for users to navigate between questions, add next and previous buttons to your index.html file:

   <button id="next-btn">Next</button>
   <button id="prev-btn">Previous</button>

Event Listeners:
Add event listeners to the next and previous buttons to handle navigation between questions:

   document.getElementById('next-btn').addEventListener('click', () => {
       moveToNextQuestion();
   });

   document.getElementById('prev-btn').addEventListener('click', () => {
       moveToPreviousQuestion();
   });

Move to Next Question Function:
Define a function named moveToNextQuestion() to move to the next question in the quiz:

   function moveToNextQuestion() {
       if (currentQuestionIndex < totalQuestions - 1) {
           currentQuestionIndex++;
           renderQuestion();
       }
   }

Move to Previous Question Function (Optional):
Optionally, define a function named moveToPreviousQuestion() to move to the previous question in the quiz:

   function moveToPreviousQuestion() {
       if (currentQuestionIndex > 0) {
           currentQuestionIndex--;
           renderQuestion();
       }
   }

Render Question Function:
Create a function named renderQuestion() to update the quiz interface with the current question and options:

   function renderQuestion() {
       // Clear previous question and options
       quizContainer.innerHTML = '';

       // Render current question and options
       const currentQuestion = questions[currentQuestionIndex];
       // Add code to render question and options dynamically
   }

Testing:
Save the script.js file and refresh your browser. You should now be able to navigate between questions using the next and previous buttons (if added).

With navigation functionality implemented, users can now move through the quiz questions seamlessly. In the next step, we’ll add functionality to display the quiz results.

Step 7: Displaying Results

After the user completes the quiz, it’s essential to provide feedback and display their results. In this step, we’ll add functionality to calculate the user’s score and display it along with a message indicating whether they passed or failed. Follow these steps to display the results using JavaScript:

Calculate Score Function:
Define a function named calculateScore() to calculate the user’s score based on their answers:

   function calculateScore() {
       let score = 0;

       questions.forEach(question => {
           const selectedOption = document.querySelector('.options input[type="radio"]:checked');

           if (selectedOption && selectedOption.value === question.correctAnswer) {
               score++;
           }
       });

       return score;
   }

Display Results Function:
Create a function named displayResults() to display the user’s score and a message indicating whether they passed or failed:

   function displayResults() {
       const score = calculateScore();
       const passingScore = Math.floor(totalQuestions * 0.7); // Adjust passing score as needed
       const resultMessage = score >= passingScore ? "Congratulations! You passed the quiz." : "Sorry, you failed the quiz.";

       const resultsContainer = document.createElement('div');
       resultsContainer.classList.add('results');
       resultsContainer.innerHTML = `
           <h2>Quiz Results</h2>
           <p>Your Score: ${score}/${totalQuestions}</p>
           <p>${resultMessage}</p>
       `;

       quizContainer.appendChild(resultsContainer);
   }

Call Display Results Function:
Finally, call the displayResults() function when the user completes the quiz or reaches the last question:

   // Inside the renderQuestion() function
   if (currentQuestionIndex === totalQuestions - 1) {
       // Display results when user completes quiz
       displayResults();
   }

Testing:
Save the script.js file and refresh your browser. Complete the quiz by answering all the questions, and you should see the results displayed on the page.

With these additions, users can now receive feedback on their performance after completing the quiz. In the next step, we’ll explore optional enhancements to improve the user experience.

Step 8: Enhancing User Experience [Optional]

In this optional step, we’ll explore additional enhancements to improve the user experience of our quiz app. These enhancements can include features such as timers, hints, or a progress bar to make the quiz more engaging. Feel free to incorporate any of the following enhancements based on your preferences:

Timer: Add a countdown timer to each question to challenge users to answer within a specified time limit. You can use JavaScript’s setTimeout() or setInterval() functions to implement the timer functionality.
Hints: Provide users with hints or additional information to help them answer questions. You can display hints dynamically based on the current question or provide a hint button that users can click to reveal hints.
Progress Bar: Display a progress bar to indicate the user’s progress through the quiz. Update the progress bar as the user navigates between questions or as they answer each question.
Feedback Animation: Add visual feedback animations to indicate correct or incorrect answers. For example, you can animate the correct answer option to highlight it in green and fade out incorrect options.
Randomize Questions: Randomize the order of questions each time the quiz is loaded to provide a unique experience for users each time they take the quiz.
Responsive Design: Ensure that your quiz app is responsive and works well on various devices and screen sizes. Use CSS media queries to adjust the layout and styling for different screen sizes.
Accessibility: Improve accessibility by adding keyboard navigation support, ensuring that all interactive elements are accessible with keyboard controls, and using semantic HTML elements for better screen reader compatibility.

Feel free to incorporate any combination of these enhancements to create a more engaging and user-friendly quiz app. Experiment with different features and functionalities to make your quiz app stand out and provide an enjoyable experience for users. Remember to test your enhancements thoroughly across different devices and browsers to ensure compatibility and usability.

Step 9: Final Touches And Testing

In this step, we’ll add final touches to our quiz app and perform thorough testing to ensure everything works as expected. Follow these steps to finalize your quiz app:

Review and Refine Code:
Go through your HTML, CSS, and JavaScript code to ensure it’s well-structured, commented, and follows best practices. Refactor any repetitive or inefficient code to improve readability and maintainability.
Test Across Browsers:
Test your quiz app across different web browsers (e.g., Google Chrome, Mozilla Firefox, Safari, Microsoft Edge) to ensure compatibility and consistent behavior. Pay attention to any browser-specific issues and address them accordingly.
Test on Mobile Devices:
Test your quiz app on various mobile devices (e.g., smartphones, tablets) to ensure it’s responsive and functions correctly on smaller screens. Verify that all interactive elements are accessible and easy to use on touchscreens.
Accessibility Testing:
Conduct accessibility testing to ensure your quiz app is accessible to users with disabilities. Use screen readers and keyboard navigation to navigate through the quiz and verify that all content and interactive elements are accessible.
Cross-Platform Testing:
Test your quiz app on different operating systems (e.g., Windows, macOS, iOS, Android) to ensure consistent performance and functionality across platforms.
Error Handling:
Implement error handling to gracefully handle any unexpected errors or exceptions that may occur during the quiz. Display informative error messages to users and provide guidance on how to proceed.
Performance Optimization:
Optimize your quiz app for performance by minimizing unnecessary code, optimizing images and media assets, and reducing page load times. Use tools like Lighthouse or PageSpeed Insights to identify performance bottlenecks and address them.
User Testing:
Conduct user testing with a small group of testers to gather feedback on the usability, functionality, and overall user experience of your quiz app. Use the feedback to make any necessary improvements or enhancements.
Documentation:
Document your quiz app, including its features, functionalities, and usage instructions. Provide clear and concise documentation to help users understand how to use the quiz app effectively.
Deployment:
Once you’re satisfied with the final version of your quiz app and it has passed all testing, deploy it to a web server or hosting platform to make it accessible to users online.

By following these steps, you can ensure that your quiz app is well-tested, user-friendly, and ready for deployment. Remember to continue monitoring and maintaining your quiz app after deployment to address any issues that may arise and keep it running smoothly.

Next Steps & Further Learning

Congratulations on completing your JavaScript quiz app! Now that you’ve built your first project, here are some next steps and further learning resources to continue your journey in web development:

Explore Advanced JavaScript Concepts: Dive deeper into JavaScript by learning about advanced topics such as asynchronous programming, ES6 features, closures, promises, and more. Websites like MDN Web Docs and JavaScript.info offer comprehensive guides and tutorials on these topics.
Learn Front-End Frameworks: Expand your skills by learning popular front-end frameworks like React, Vue.js, or Angular. These frameworks allow you to build more complex and interactive web applications efficiently. Check out official documentation and tutorials to get started with these frameworks.
Master CSS Techniques: Improve your CSS skills by learning advanced techniques and best practices for styling web pages. Explore topics such as CSS Flexbox, Grid Layout, animations, responsive design, and CSS preprocessors like Sass or Less.
Practice Algorithm and Data Structures: Enhance your problem-solving skills and algorithmic thinking by practicing coding challenges and solving problems on platforms like LeetCode, HackerRank, or CodeSignal. Understanding algorithms and data structures is crucial for becoming a proficient developer.
Contribute to Open Source Projects: Contribute to open source projects on platforms like GitHub to gain real-world experience, collaborate with other developers, and build your portfolio. Look for beginner-friendly projects and start contributing code, documentation, or bug fixes.
Build More Projects: The best way to learn and improve as a developer is to build more projects. Start small and gradually work your way up to more complex projects. Experiment with different ideas, technologies, and design patterns to broaden your skillset.
Stay Updated: Keep yourself updated with the latest trends, tools, and technologies in web development. Follow blogs, newsletters, podcasts, and social media channels related to web development to stay informed about industry updates and best practices.
Join Developer Communities: Join online developer communities and forums like Stack Overflow, Reddit (r/webdev), or Dev.to to connect with other developers, ask questions, share knowledge, and learn from others’ experiences.

Remember that learning web development is a continuous journey, and there’s always something new to explore and learn. Stay curious, practice regularly, and never stop challenging yourself to grow as a developer. Happy coding!

JavaScript Quiz App Full Source Code

Sure, here’s the full source code for the JavaScript quiz app (JavaScript Quiz App Full Source Code):

index.html:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>JavaScript Quiz App</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <header>
        <h1>JavaScript Quiz App</h1>
    </header>
    <main>
        <div class="quiz-container">
            <!-- Quiz Content Goes Here -->
        </div>
    </main>
    <footer>
        <!-- Footer Content Goes Here -->
    </footer>
    <script src="script.js"></script>
</body>
</html>

style.css:

body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #007bff;
    color: #fff;
    padding: 20px;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 24px;
}

.quiz-container {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin: 20px auto;
    max-width: 600px;
    padding: 20px;
}

.question {
    font-size: 20px;
    margin-bottom: 20px;
}

.options {
    list-style-type: none;
    padding: 0;
}

.options li {
    margin-bottom: 10px;
}

#submit-btn {
    background-color: #007bff;
    border: none;
    color: #fff;
    cursor: pointer;
    font-size: 16px;
    padding: 10px 20px;
    border-radius: 4px;
}

#submit-btn:hover {
    background-color: #0056b3;
}

script.js:

const questions = [
    {
        question: "What is the capital of France?",
        options: ["Paris", "London", "Berlin", "Rome"],
        correctAnswer: "Paris"
    },
    {
        question: "What is 2 + 2?",
        options: ["3", "4", "5", "6"],
        correctAnswer: "4"
    },
    // Add more questions here...
];

let currentQuestionIndex = 0;
const totalQuestions = questions.length;
const quizContainer = document.querySelector('.quiz-container');

function initQuiz() {
    renderQuestion();
}

function renderQuestion() {
    quizContainer.innerHTML = '';

    const currentQuestion = questions[currentQuestionIndex];

    const questionElement = document.createElement('div');
    questionElement.classList.add('question');
    questionElement.textContent = `Question ${currentQuestionIndex + 1}: ${currentQuestion.question}`;

    const optionsList = document.createElement('ul');
    optionsList.classList.add('options');

    currentQuestion.options.forEach(option => {
        const optionItem = document.createElement('li');
        optionItem.textContent = option;
        optionsList.appendChild(optionItem);
    });

    const submitButton = document.createElement('button');
    submitButton.setAttribute('id', 'submit-btn');
    submitButton.textContent = 'Submit';

    submitButton.addEventListener('click', () => {
        const selectedOption = document.querySelector('.options li.selected');
        if (selectedOption) {
            handleUserAnswer(selectedOption.textContent);
        } else {
            alert('Please select an option');
        }
    });

    quizContainer.appendChild(questionElement);
    quizContainer.appendChild(optionsList);
    quizContainer.appendChild(submitButton);
}

function handleUserAnswer(selectedOption) {
    const currentQuestion = questions[currentQuestionIndex];

    if (selectedOption === currentQuestion.correctAnswer) {
        alert('Correct answer!');
    } else {
        alert('Incorrect answer!');
    }

    if (currentQuestionIndex < totalQuestions - 1) {
        currentQuestionIndex++;
        renderQuestion();
    } else {
        displayResults();
    }
}

function displayResults() {
    const score = calculateScore();
    const passingScore = Math.floor(totalQuestions * 0.7);
    const resultMessage = score >= passingScore ? "Congratulations! You passed the quiz." : "Sorry, you failed the quiz.";

    const resultsContainer = document.createElement('div');
    resultsContainer.classList.add('results');
    resultsContainer.innerHTML = `
        <h2>Quiz Results</h2>
        <p>Your Score: ${score}/${totalQuestions}</p>
        <p>${resultMessage}</p>
    `;

    quizContainer.appendChild(resultsContainer);
}

function calculateScore() {
    let score = 0;

    questions.forEach(question => {
        const selectedOption = document.querySelector('.options li.selected');

        if (selectedOption && selectedOption.textContent === question.correctAnswer) {
            score++;
        }
    });

    return score;
}

quizContainer.addEventListener('click', event

 => {
    const selectedOption = event.target;
    if (selectedOption.tagName === 'LI') {
        const previousSelectedOption = document.querySelector('.options li.selected');
        if (previousSelectedOption) {
            previousSelectedOption.classList.remove('selected');
        }
        selectedOption.classList.add('selected');
    }
});

initQuiz();

This code includes the HTML structure, CSS styles, and JavaScript functionality for a basic quiz app. Feel free to customize and expand it according to your requirements!

Read also: How to make a simple audio player in HTML, JavaScript, CSS. Download Source Code

Wrapping Up

Congratulations on completing the development of your JavaScript quiz app! You’ve learned how to build a functional quiz application from scratch using HTML, CSS, and JavaScript. Here’s a quick recap of what we’ve covered:

Project Setup: We set up the project structure by creating HTML, CSS, and JavaScript files.
Quiz Structure: We built the HTML structure of the quiz app, including questions, options, and navigation buttons.
Styling: We added CSS styles to enhance the visual appearance of the quiz app and make it more user-friendly.
JavaScript Functionality: We implemented JavaScript functionality to initialize the quiz, handle user answers, navigate between questions, and display results.
Optional Enhancements: We explored optional enhancements such as timers, hints, progress bars, and more to improve the user experience of the quiz app.
Final Touches and Testing: We added final touches, performed thorough testing, and ensured that the quiz app is functional, responsive, and accessible.
Next Steps: We discussed further learning opportunities and suggested next steps to continue your journey in web development.

Now that you’ve built your first project, don’t stop here! Keep practicing, exploring new concepts, and building more projects to hone your skills. Remember to stay curious, be persistent, and never stop learning.

Thank you for following along, and best of luck on your web development journey! If you have any questions or need further assistance, don’t hesitate to reach out. Happy coding!

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