React dark mode code example

Example 1: disable dark mode swift

if #available(iOS 13.0, *) {
          UIWindow.appearance().overrideUserInterfaceStyle = .light
      }

Example 2: react dark mode npm

$ npm i use-dark-mode

Example 3: react dark mode

import React from 'react'
import { func, string } from 'prop-types';
import styled from "styled-components"
const Button = styled.button`
  background: ${({ theme }) => theme.background};
  border: 2px solid ${({ theme }) => theme.toggleBorder};
  color: ${({ theme }) => theme.text};
  border-radius: 30px;
  cursor: pointer;
  font-size:0.8rem;
  padding: 0.6rem;
  }
\`;
const Toggle = ({theme,  toggleTheme }) => {
    return (
        <Button onClick={toggleTheme} >
          Switch Theme
        </Button>
    );
};
Toggle.propTypes = {
    theme: string.isRequired,
    toggleTheme: func.isRequired,
}
export default Toggle;

Example 4: dark mode with react hooks

// DarkMode/index.js

const DarkModeToggle = () => {
  const [isDark, setIsDark] = useState(localStorage.getItem("theme") === "dark" ? true : false);
  useEffect(() => {
    document
    .getElementsByTagName("HTML")[0]
    .setAttribute("data-theme", localStorage.getItem("theme"));
  },[]);