Want to show/hide elements, highlight sections, or trigger animations with JavaScript? In this beginner-friendly tutorial, you’ll learn how to add and remove CSS classes dynamically using JavaScript — an essential skill for building interactive websites.

We'll use the powerful classList API to modify classes in real-time, enabling things like toggles, button states, theme switching, validation indicators, and more — all with clean, efficient code.

In this video, you’ll learn:

How to select elements using getElementById and querySelector

Use of classList.add(), classList.remove(), and classList.toggle()

Best practices for clean, readable code

Real-world examples: button toggle, active state styling, dark/light mode

How to avoid className overwriting and bugs

Perfect for JavaScript beginners, students, and anyone working on interactive UIs, games, or frontend projects.

Watch our full JavaScript Tutorials Playlist to learn more about DOM manipulation, event handling, and real-world web projects!

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