React localstorage

// setter
localStorage.setItem('myData', data);
// getter
localStorage.getItem('myData');
// remove
localStorage.removeItem('myData');
// remove all
localStorage.clear();

Source: robinwieruch.de

React localStorage

const useLocalStorage = (keyName, defaultValue) => {
  const [storedValue, setStoredValue] = React.useState(() => {
    try {
      const value = window.localStorage.getItem(keyName);

      if (value) {
        return JSON.parse(value);
      } else {
        window.localStorage.setItem(keyName, JSON.stringify(defaultValue));
        return defaultValue;
      }
    } catch (err) {
      return defaultValue;
    }
  });

  const setValue = newValue => {
    try {
      window.localStorage.setItem(keyName, JSON.stringify(newValue));
    } catch (err) {}
    setStoredValue(newValue);
  };

  return [storedValue, setValue];
};

Example
const MyApp = () => {
  const [name, setName] = useLocalStorage('name', 'John');

  return <input value={name} onChange={e => setName(e.target.value)} />;
};

ReactDOM.render(<MyApp />, document.getElementById('root'));

Source: 30secondsofcode.org

Similar codes

0 vote127 views1 answer
Invariant Violation: [React Intl] An `id` must be provided to format a message.
Javascript React
1 vote120 views1 answer
Unordered list in react native
Javascript React
0 vote123 views1 answer
Botão delete no reactjs com class component
Javascript React
3 votes147 views2 answers
Whatare portals in react
Javascript React
0 vote116 views1 answer
Rngesturehandlermodule.default.direction react native
Javascript React
1 vote162 views1 answer
Check if new user in firebase react
Javascript React
0 vote148 views1 answer
Textalignvertical not working in ios react native
Javascript React
0 vote113 views1 answer
Map of filtered data react
Javascript React
4 votes182 views3 answers
Add google map in react js
Javascript React
0 vote116 views1 answer
Unable to resolve "@react-native-community/masked-view" from
Javascript React