Create Toggle Display (Accordion) with JavaScript

How to build a clickable FAQ-style UI

👀 Live Demo

👇Click on a question title below to toggle its content👇

❓ Question 1: What is this?

This is an accordion UI controlled by JavaScript. When you click on the title, the associated content shows or hides accordingly.

❓ Question 2: When should I use this?

This is useful for FAQs, collapsible menus, and showing additional details—great for organizing large amounts of information.

📋 Partial Code (HTML & JavaScript)

This is the minimum HTML and JavaScript needed to implement this functionality.

*Note: CSS classes like `.toggle-box` are assumed to be included in your integrated `style.css` file.

HTML Structure

<!-- First set -->
<div class="toggle-box">
  <div class="toggle-title">Question Title 1</div>
  <div class="toggle-content">
    <p>Answer to question 1 goes here.</p>
  </div>
</div>

<!-- Second set -->
<div class="toggle-box">
  <div class="toggle-title">Question Title 2</div>
  <div class="toggle-content">
    <p>Answer to question 2 goes here.</p>
  </div>
</div>

JavaScript

document.querySelectorAll('.toggle-title').forEach(title => {
  title.addEventListener('click', () => {
    title.classList.toggle('active');
    const content = title.nextElementSibling;
    content.classList.toggle('open');
  });
});

💻 Fully Functional Code (HTML File)

Copy the code below and save it as a `.html` file to see it work right away.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Toggle Display Demo</title>
  <style>
    body { font-family: sans-serif; max-width: 600px; margin: 2rem auto; }
    .toggle-box { border: 1px solid #ccc; margin-bottom: 1rem; padding: 1rem; border-radius: 8px; }
    .toggle-title { cursor: pointer; font-weight: bold; position: relative; }
    .toggle-title::after { content: '＋'; position: absolute; right: 0; }
    .toggle-title.active::after { content: '−'; }
    .toggle-content { display: none; margin-top: 1rem; border-top: 1px solid #eee; padding-top: 1rem; }
    .toggle-content.open { display: block; }
  </style>
</head>
<body>
  <h1>FAQ</h1>
  <div class="toggle-box">
    <div class="toggle-title">Question 1</div>
    <div class="toggle-content"><p>Answer 1</p></div>
  </div>
  <div class="toggle-box">
    <div class="toggle-title">Question 2</div>
    <div class="toggle-content"><p>Answer 2</p></div>
  </div>
  <script>
    document.querySelectorAll('.toggle-title').forEach(title => {
      title.addEventListener('click', () => {
        title.classList.toggle('active');
        const content = title.nextElementSibling;
        content.classList.toggle('open');
      });
    });
  </script>
</body>
</html>

📘 Explanation & Customization Tips

This toggle display template provides a basic structure for creating FAQs or accordion menus. However, in real-world use, multiple sections opening at once can affect readability. If you want only one section to be open at a time, it's recommended to modify the JavaScript to automatically close others when one is opened.

Also, adding animations can make opening/closing transitions smoother and more visually appealing. You can achieve fade or slide effects using CSS transition and max-height.