Add Dark Mode Toggle Using TailwindCSS

Use this AI prompt to add a dark mode toggle to your TailwindCSS project, supporting persisted user preferences with localStorage.

🧠 What This Prompt Does

This AI prompt helps you implement a dark mode toggle for TailwindCSS-based projects.
It automatically saves the user’s theme preference and switches between light and dark themes dynamically.

💬 The Prompt

You are a frontend engineer.
Generate a dark mode toggle component for a TailwindCSS project.

Requirements:

- Toggle light/dark mode via button
- Persist preference in localStorage
- Apply dark class to <html> element
- Provide React component code

🚀 Example Output (AI Generated)

import { useEffect, useState } from 'react';

export default function DarkModeToggle() {
  const [darkMode, setDarkMode] = useState(false);

  useEffect(() => {
    const theme = localStorage.getItem('theme');
    if (theme === 'dark') {
      document.documentElement.classList.add('dark');
      setDarkMode(true);
    }
  }, []);

  const toggleTheme = () => {
    const html = document.documentElement;
    if (darkMode) {
      html.classList.remove('dark');
      localStorage.setItem('theme', 'light');
    } else {
      html.classList.add('dark');
      localStorage.setItem('theme', 'dark');
    }
    setDarkMode(!darkMode);
  };

  return (
    <button
      onClick={toggleTheme}
      className='p-2 rounded-md border border-gray-400 dark:border-gray-600 bg-gray-100 dark:bg-gray-800 text-gray-900 dark:text-gray-100'>
      {darkMode ? '🌙 Dark Mode' : '☀️ Light Mode'}
    </button>
  );
}

📘 When to Use This Prompt

  • When enabling theme toggles in dashboards or blogs.
  • To add personalization features with minimal JS.
  • When building modern UIs with accessibility in mind.

💡 Best Practices

  • Enable darkMode as "class" in your Tailwind config.
  • Add smooth transitions between modes using transition-colors.
  • Provide sufficient contrast in both themes.
  • Respect system preference using the prefers-color-scheme media query.

🏁 Summary

This prompt helps you integrate a fully functional dark mode toggle in your TailwindCSS projects — with persistent user settings and clean UI transitions.

tailwinddark-modethemetoggleai-prompt

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