Tailwind CSS Dark Mode Toggle in React 19: Persisting User Preference Without Flash-of-Wrong-Theme on Hydration
📰 Dev.to · Ugur Aslim
Learn to implement dark mode persistence in React 19 using Tailwind CSS, preventing flash-of-wrong-theme on hydration
Action Steps
- Use localStorage to store user preference for dark mode
- Add a non-blocking script to run before React hydration
- Configure Tailwind's class-based theme system to apply the user's preferred theme
- Implement a function to toggle dark mode and update localStorage
- Test the implementation to ensure seamless theme switching without flash-of-wrong-theme
Who Needs to Know This
Frontend developers and designers working with React and Tailwind CSS can benefit from this technique to enhance user experience
Key Insight
💡 Use a non-blocking script and localStorage to persist user preference and prevent theme flicker
Share This
🌑 Implement dark mode persistence in #React19 with #TailwindCSS and prevent flash-of-wrong-theme on hydration!
Full Article
Implement dark mode persistence in React 19 using a combination of localStorage, a non-blocking script that runs before React hydration, and Tailwind's class-based theme system to prevent the flickering white screen that annoys users when their browser preference loads after initial paint.
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