/Javascript/React/React check if browser is in dark mode

React check if browser is in dark mode

if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
    // dark mode
}

//To watch for changes:

window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', e => {
    const newColorScheme = e.matches ? "dark" : "light";
});

//Or in React Hooks:

const [mode, setMode] = useState<"light" | "dark" | undefined>(
    window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches ? "dark" :"light"
);

useEffect(() => {
  const modeMe = (e: any) => {
    setMode(e.matches ? "dark" : "light");
  }  
  window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', modeMe);
  return window.matchMedia('(prefers-color-scheme: dark)').removeListener(modeMe);
}, []);

-1

Source: stackoverflow.com

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