Interactive Quiz App

This project is a simple interactive quiz application built with HTML, CSS, and JavaScript. It allows users to answer multiple-choice questions, submit their answers, and receive an instant score. The app demonstrates basic form handling, dynamic content updates, and DOM manipulation in JavaScript.

---

? Project Overview

Features

• Multiple Choice Questions: Three questions with multiple answer options.
• Submit Button: Allows users to submit their answers.
• Instant Scoring: Displays the user's score immediately after submission.
• Interactive Design: Simple styling and hover effects for better user experience.

Technologies Used

• HTML: For structuring the content.
• CSS: For styling the quiz interface.
• JavaScript: For adding interactivity and processing the answers.

---

? File Structure

quiz-app/
│-- index.html      ← The HTML structure
│-- styles.css      ← The CSS styling
└-- script.js       ← The JavaScript logic

---

? Code Breakdown

? HTML (index.html)

The HTML file creates the structure of the quiz, including questions, answer choices, and a submit button.

Key Elements:

• Form (
  ) to group quiz questions.
• Radio Buttons () for selecting answers.
• Submit Button to check the answers.
• Result Div to display the score.

<form>



<h3>
  
  
  ? <strong>CSS (styles.css)</strong>
</h3>

<p>The CSS file styles the quiz interface, making it visually appealing and responsive.</p>

<p><strong>Key Styling Concepts:</strong></p>

• Layout: Flexbox for alignment and spacing.
• Hover Effects: Button changes color when hovered.
• Box Shadow: For a modern card-like appearance.

button {
  background-color: #28a745;
  color: #fff;
  padding: 10px 15px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #218838;
}

⚙️ JavaScript (script.js)

The JavaScript file handles the quiz logic, processes user answers, and displays the score.

Key Concepts:

• Event Listeners: To detect when the user clicks the submit button.
• Form Handling: Accessing user-selected answers.
• DOM Manipulation: Updating the result section with the user's score.

document.getElementById('submit-btn').addEventListener('click', function() {
  const answers = {
    q1: 'Paris',
    q2: '4',
    q3: 'Blue'
  };

  let score = 0;
  const form = document.getElementById('quiz-form');

  if (form.q1.value === answers.q1) score++;
  if (form.q2.value === answers.q2) score++;
  if (form.q3.value === answers.q3) score++;

  document.getElementById('result').textContent = `You scored ${score} out of 3!`;
});

---

? Key Concepts for Learning

1. HTML Forms and Inputs:

   • How to structure forms and use radio buttons for multiple-choice questions.
   • Understanding the name attribute for grouping radio inputs.

2. CSS Styling:

   • Using Flexbox for layout and alignment.
   • Adding visual appeal with hover effects and shadows.

3. JavaScript Interactivity:

   • Adding event listeners with addEventListener().
   • Reading form data and comparing user input to correct answers.
   • Updating the DOM dynamically using textContent.

---

?️ How to Run the Project

1. Clone or Download the Project:

quiz-app/
│-- index.html      ← The HTML structure
│-- styles.css      ← The CSS styling
└-- script.js       ← The JavaScript logic

1. Open index.html in your browser:

<form>



<h3>
  
  
  ? <strong>CSS (styles.css)</strong>
</h3>

<p>The CSS file styles the quiz interface, making it visually appealing and responsive.</p>

<p><strong>Key Styling Concepts:</strong></p>

• Layout: Flexbox for alignment and spacing.
• Hover Effects: Button changes color when hovered.
• Box Shadow: For a modern card-like appearance.

button {
  background-color: #28a745;
  color: #fff;
  padding: 10px 15px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #218838;
}

1. Try the Quiz:
   • Answer the questions.
   • Click "Submit Answers" to see your score.

---

? Enhancements to Try

• Add More Questions: Increase the number of questions to challenge users.
• Custom Feedback: Show detailed feedback for each question.
• Timer: Add a countdown timer for each question.
• Styling Improvements: Enhance the design with animations or themes.

---

? View Project on GitHub ?

The above is the detailed content of Interactive Quiz App. For more information, please follow other related articles on the PHP Chinese website!