[React] v17 vs v18 update state batch

동일한 코드 사용 import { useEffect, useLayoutEffect, useState } from "react"; export default function App() { const [a, setA] = useState(0); useEffect(() => { setA((a) => { console.log("first useEffect = " + a + "->" + 1); return 1; }); }, []); useEffect(() => { if (a === 2) { setA((a) => { console.log("secont useEffect = " + a + "->" + 3); return 3; }); } }, [a]); useLayoutEffect(() => { setA((a) => ..

2022.09.08