Toggle dark/light mode in CSS/JavaScript and remember preference
In this quick JavaScript tutorial, we’ll build a Dark/Light mode toggle button from scratch — and store user preference using localStorage.
Learn how to detect system theme, apply CSS themes, and persist user choices with clean, beginner-friendly code. No frameworks or libraries needed!
🔥 Topics Covered:
CSS dark mode with data-theme
JavaScript toggle logic
Save + apply user preference from localStorage
Smooth transitions and accessibility tips
📁 Code on GitHub: [your repo link]
📺 More in the JavaScript Bytes playlist → [playlist link]
💬 Drop a comment if you'd like to see this implemented in React or Vue!
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