I was pretty wondering about this as relatively newbie developer...
아래 독일 개발자 초록이분의 티스토리 아티클이 이해 되는데 쉽게 정리되어 링크를 아래 남겨둔다.
https://ko-de-dev-green.tistory.com/20
https://medium.com/@osmanakar_65575/javascript-how-the-engine-compiles-6df6d5c6439c
coder for web development + noodler at programming synthesizers for sound design as hobbyist.