[React.js] useReducer

import "./App.css"; import { useState, useReducer } from "react"; function App() { // useState const [count, setCount] = useState(0); function down() { setCount(count - 1); } function up() { setCount(count + 1); } function reset() { setCount(0); } // useReducer function countReducer(oldcount, action) { if (action === "UP") { return oldcount + 1; } else if (action === "DOWN") { return oldcount - ..

원문링크 : [React.js] useReducer