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| 1 2 3 4 5 6 7 8 9 10 11 | import './StateCounter.css'; export default function StateCounter({ step, onUpdate }) { // 버튼 클릭으로 상위 State(count)에 step 값만큼 추가 const handleClick = () => onUpdate(step); return ( <button className="cnt" onClick={handleClick}> <span>{step}</span> </button> ); } |