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React - List와 Key
위의 예제에서와 같이 map함수를 사용하여 리스트 형태로 render() 함수를 실행하면, "Warning: Each child in a list should have a unique "key" prop."라는 오류메시지가 뜬다.“key”는 엘리먼트 리스트를 만들 때
2021년 1월 29일
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