npm install tailwind-theme-toggle

or

yarn install tailwind-theme-toggle

Usage

Step 1.

// tailwind.config.js

module.exports = {
  darkMode: "class",
  // others
};

Step 2.

in React.s/Next.js

Recommended this package for react/nextjs project, click here

import themeToggler from "tailwind-theme-toggle";

const Button = () => <button onClick={themeToggler}> Toggle </button>;

in Vue.js/Nuxt.js

import themeToggler from "tailwind-theme-toggle";

<button @click="themeToggler">Greet</button>

in raw HTML/JavaScript

import themeToggler from "tailwind-theme-toggle";

const button = document.getElementById("togglerButton");
button.addEventListener("click", themeToggler);

Also you can check theme

const theme = localStorage.getItem("theme");
const isDark = theme === "dark";