React Hook: useLocalStorage

README.md

React Hook: useLocalStorage

Code by Robin Wieruch copied from his article

useLocalStorage.js

const useLocalStorage = (storageKey, fallbackState) => {
  const [value, setValue] = React.useState(
    JSON.parse(localStorage.getItem(storageKey)) || fallbackState
  );

  React.useEffect(() => {
    localStorage.setItem(storageKey, JSON.stringify(value));
  }, [value, storageKey]);

  return [value, setValue];
};