Использование localStorage и состояния useState в функциональном компоненте React JS.
useLocalSorage.js
import { useState, useEffect } from 'react'; function getStorageValue(key, defaultValue) { // getting stored value const saved = localStorage.getItem(key); const initial = JSON.parse(saved); return initial || defaultValue; } export const useLocalStorage = (key, defaultValue) => { const [value, setValue] = useState(() => { return getStorageValue(key, defaultValue); }); useEffect(() => { // storing input name localStorage.setItem(key, JSON.stringify(value)); }, [key, value]); return [value, setValue]; };
Использование:
import { useLocalStorage } from '../../utils/useLocalStorage'; const [value, setValue] = useLocalStorage( 'keyNameInLocalStorage', 'default value' );