Why?에서 시작해 How를 찾는 과정을 좋아합니다. 그 고민과 성장의 과정을 꾸준히 기록하고자 합니다.
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프로퍼티 존재확인/열거 메서드
객체에 특정 프로퍼티가 존재하는지 여부를 확인한다.⭕ in 연산자는 객체가 상속받은 모든 프로토타입의 프로퍼티를 확인한다.객체에 특정 프로퍼티가 존재하는지 여부를 확인한다.❌ hasOwnProperty 메서드는 상속받은 프로토타입의 프로퍼티를 확인하지 않는다.for..
2021년 11월 4일
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