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Title: 4-1 반복문&함수(2)_이나래 by jerryko570 · Pull Request #16 · CodeItFour/Modern-JavaScript-Study · GitHub

Open Graph Title: 4-1 반복문&함수(2)_이나래 by jerryko570 · Pull Request #16 · CodeItFour/Modern-JavaScript-Study

X Title: 4-1 반복문&함수(2)_이나래 by jerryko570 · Pull Request #16 · CodeItFour/Modern-JavaScript-Study

Description: 📚 학습 주제 주차: [주차번호] 4-1주차 주제: [학습 주제명] 반복문&함수 📝 학습 내용 체크리스트 ✅ 개념 요약 1.함수(function) 어떤 일을 이름 붙여 저장하고 필요할 때 함수()로 호출 1-2.함수의 기본 특징 중복 줄임 지역변수(함수 안에서만) 외부변수(가져다 씀, 가릴 수 있음) 전역변수(어디서나, 최소 사용) 1-3.매개변수(파라미터)&인수(아규먼트) 매개변수: 함수 만들 때 빈칸 인수: 실행할 때 넣는 값 공통: 함수와 데이터를 주고받음 1-4.디폴트 값 값 안 넣으면 undefined, 기본값 설정 가능 1-5.반환 값 함수가 결과를 돌려줌 (return) 2.함수 표현식(function Expression) 함수 = 값 > 변수에 저장, 전달, 복사 가능 실행 도중에 만들어지는 함수 2-1.콜백함수 함수를 값처럼 다른 함수에 넘겨서 나중에 실행되는 함수 3.화살표 함수(Arrow Function) 간단한 함수 만들 때 쓰는 문법 한 줄 => 표현식 (자동 return) 여러 줄 => { }와 return 필요 🔍 모르는 개념 연구 함수 선언은 미리 호출 가능, 함수 표현식은 안 됨 → 이유는 호이스팅 때문임 함수 선언문은 호이스팅으로 미리 준비됨 → 위에서 호출 가능 함수 표현식은 변수라서 할당 시점 전에는 undefined → 위에서 호출 불가 > 따라서 둘 다 호이스팅은 되지만, 무엇이 올라가느냐가 다름 정리하면, 선언문은 함수 전체이고 표현식은 변수 이름만 (값은 undefined) 📋 주요 학습 개념 설명/요약 (선택) ❓ 질문사항 및 토론 포인트 함수는 여러가지 문법 모양(선언, 표현식, 화살표 함수)을 만들 수 있는걸로 아는데, 공부를 해도 이해가 완벽히 되는 것 같지 않아요. 어떤 상황에서 각각 쓰이는지 궁금합니다. 함수가 변수에 들어가거나 인자로 전달되는 과정이 너무 헷갈려요. 이걸 어떻게 이해하면 좋을까요... 📖 참고 자료 (선택)

Open Graph Description: 📚 학습 주제 주차: [주차번호] 4-1주차 주제: [학습 주제명] 반복문&함수 📝 학습 내용 체크리스트 ✅ 개념 요약 1.함수(function) 어떤 일을 이름 붙여 저장하고 필요할 때 함수()로 호출 1-2.함수의 기본 특징 중복 줄임 지역변수(함수 안에서만) 외부변수(가져다 씀, 가릴 수 있음) 전역변수(어디서나, 최소 사용) ...

X Description: 📚 학습 주제 주차: [주차번호] 4-1주차 주제: [학습 주제명] 반복문&함수 📝 학습 내용 체크리스트 ✅ 개념 요약 1.함수(function) 어떤 일을 이름 붙여 저장하고 필요할 때 함수()로 호출 1-2.함수의 기본 특징 중복 줄임 지역변수(함수 안에서만) 외부변수(가져다 씀, 가릴 수 있음) 전역변수(어디서나, 최소 사...

Opengraph URL: https://github.com/CodeItFour/Modern-JavaScript-Study/pull/16

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