Want to add a dark mode switcher to your website? In this beginner-friendly tutorial, you’ll learn how to create a light and dark mode toggle using JavaScript, HTML, and CSS — no libraries or frameworks required.

This is a must-know feature for modern UI/UX, helping you improve accessibility, user preference, and overall design. You’ll create a button or switch that changes the theme instantly and optionally saves the user’s choice.

In this video, you’ll learn:

How to structure a theme toggle button with HTML & CSS

Using JavaScript to toggle light/dark themes with classList.toggle()

How to apply and manage CSS variables or classes for both themes

(Bonus) Save theme preference using localStorage

Real-world tips for smooth transitions and accessibility

Perfect for JavaScript beginners, students, and frontend developers building responsive, user-friendly interfaces.

Check out our full JavaScript Projects Playlist for more UI features and real-world components!

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