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How can I implement dark mode toggle functionality in Tailwind CSS?
Asked on Feb 11, 2026
Answer
In Tailwind CSS, implementing a dark mode toggle involves using the "dark" variant to apply different styles based on a dark mode class. You can manage the toggle functionality using JavaScript to add or remove a "dark" class on the HTML element.
<!-- BEGIN COPY / PASTE -->
<html lang="en">
<head>
<script>
function toggleDarkMode() {
document.documentElement.classList.toggle('dark');
}
</script>
</head>
<body class="bg-white dark:bg-gray-900 text-black dark:text-white">
<button onclick="toggleDarkMode()" class="p-2 bg-gray-200 dark:bg-gray-800 rounded">
Toggle Dark Mode
</button>
<div class="p-4">
<p class="text-lg">This is a sample text.</p>
</div>
</body>
</html>
<!-- END COPY / PASTE -->Additional Comment:
- Use the "dark" variant in Tailwind to define styles for dark mode, such as "dark:bg-gray-900".
- The JavaScript function toggles the "dark" class on the root element, affecting all elements with dark mode styles.
- Ensure your Tailwind configuration has "darkMode" set to "class" to enable this behavior.
- Consider storing the dark mode preference in local storage for persistence across page loads.
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