Button click animations

Part of the JavaScript in Action section of Coddy's HTML journey — lesson 20 of 27.

Sometimes we want buttons to give instant feedback when clicked — like shrinking, glowing, or bouncing. We can trigger CSS animations or transitions using JavaScript.

First, create a simple button in your HTML:

<button id="animatedButton">Click Me</button>

Then, add some basic CSS to style the button:

#animatedButton {
  padding: 10px 20px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.2s, background-color 0.2s;
}

Now, add JavaScript to create the click animation:

const button = document.getElementById('animatedButton');

button.addEventListener('click', function() {
  // Add a class for the click effect
  button.classList.add('button-clicked');
  
  // Remove the class after animation completes
  setTimeout(function() {
    button.classList.remove('button-clicked');
  }, 200);
});

Finally, add the CSS for the animation effect:

.button-clicked {
  transform: scale(0.95);
  background-color: #45a049;
}

When clicked, the button will now slightly shrink and change color, providing visual feedback to the user.

Challenge

Easy

When the button is clicked, add the CSS class "button-clicked" to it for visual feedback.

Add the line that applies this class inside the click event listener.

Try it yourself

<!DOCTYPE html>
<html>
<head>
  <title>Button Animation Example</title>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <header>
    <h1>Interactive Button Demo</h1>
    <p>Click the button below to see a smooth animation effect.</p>
  </header>

  <main class="content">
    <button id="animatedButton" class="btn">Click Me</button>
  </main>

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