How to add a progressbar shared with all content pages

2 min read 01-10-2024
How to add a progressbar shared with all content pages


How to Add a Shared Progress Bar to Your Content Pages

Adding a progress bar to your content pages can enhance user experience by providing a visual indication of how far they've progressed through the article. This can be particularly useful for long-form content, giving readers a sense of accomplishment and encouraging them to continue reading.

Imagine you're building a website with lengthy blog posts. Wouldn't it be helpful if readers could see how much of the article they've already consumed? This is where a shared progress bar comes in.

Here's a simplified example using basic HTML and CSS:

<!DOCTYPE html>
<html>
<head>
  <title>Shared Progress Bar</title>
  <style>
    .progress-bar {
      width: 100%;
      height: 5px;
      background-color: #ddd;
      position: fixed;
      bottom: 0;
      left: 0;
      z-index: 100;
    }

    .progress-bar-fill {
      height: 100%;
      background-color: #4CAF50;
      width: 0%;
      transition: width 0.5s ease;
    }
  </style>
</head>
<body>

  <div class="progress-bar">
    <div class="progress-bar-fill"></div>
  </div>

  <h1>Your Long-Form Content Here</h1>

  <script>
    // Get the progress bar elements
    const progressBar = document.querySelector('.progress-bar-fill');

    // Calculate the scroll position
    window.addEventListener('scroll', () => {
      const scrollTop = window.pageYOffset;
      const scrollHeight = document.body.scrollHeight;
      const clientHeight = window.innerHeight;

      // Calculate percentage scrolled
      const percentage = (scrollTop / (scrollHeight - clientHeight)) * 100;

      // Update the progress bar width
      progressBar.style.width = percentage + '%';
    });
  </script>

</body>
</html>

Explanation:

  • HTML:
    • We create a simple div with class progress-bar to act as the container.
    • Inside, another div with class progress-bar-fill represents the filled portion of the bar.
  • CSS:
    • Basic styles are applied to the progress bar, giving it a width, height, background color, and positioning at the bottom of the screen.
    • The progress-bar-fill is initially set to width: 0%, ensuring it's empty at the start.
    • A transition effect is added for a smooth visual update.
  • JavaScript:
    • We select the progress-bar-fill element.
    • On every scroll event, we calculate the percentage of the page scrolled.
    • This percentage is then used to dynamically update the width of the progress-bar-fill element, creating the visual progress bar effect.

Key Points:

  • Shared Across Pages: This setup ensures the progress bar is shared across all content pages.
  • Dynamic Updating: The JavaScript updates the bar in real-time as the user scrolls.
  • Customization: You can easily modify the colors, height, position, and other CSS properties to match your website's design.

Enhancements:

  • Smooth Scrolling: Consider using a smooth scroll effect to improve the user experience further.
  • Accessibility: Ensure the progress bar is accessible to users with disabilities by using ARIA attributes.
  • Responsive Design: Make sure the progress bar adapts well to different screen sizes.

Resources:

By adding a shared progress bar to your website, you can offer a more engaging and user-friendly reading experience, making your content more accessible and enjoyable for your visitors.