Reactjs Props State Usestate Controlled Lifting

Definisi

Props = data masuk ke komponen (read-only). State = data internal yang bisa berubah via useState. Controlled component: input nilainya dari state (value={state}). Lifting state: pindahkan state ke parent agar dibagikan ke siblings.

Kapan dipakai

Setiap form/interaksi butuh state. Controlled input penting agar React jadi sumber kebenaran (single source of truth).

Cara kerja

jsx

function Counter() {
  const [n, setN] = useState(0); // state
  return <button onClick={()