PR ( Pull Request )

https://inpa.tistory.com/entry/GIT-⚡️-깃헙-PRPull-Request-보내는-방법-folk-issue

함수 선언식 ( Function Declaration )

https://velog.io/@clydehan/JavaScript-함수-선언식-vs-함수-표현식-차이점과-성능-최적화-전략

함수 표현식 ( Function Expression )

BOM ( Browser Object Model )

배열 고차함수