는 이들을 하나의 단위로 취급합니다. 제어문 없이 블록 문만 써도 되지만 별 의미는 없습니다.
다음 예제를 보십시오.
{ // 블록 문을 시작합니다.
console
.
log
("
statement
1
");
console
.
log
("
statement
2
");
} // 블록 문을 끝냅니다.
console
.
log
("
statement
3
");
처음의 두
console
.
log
는 블록 안에 있습니다. 유효한 문법이지만, 무의미합니다.
블록 문이 유용해지는 것은 제어문과 함께 쓸 때입니다. 예를 들어
while
문에서 실행하는 루
프는
블록 문 전체
를 실행한 후 조건을 다시 테스트합니다. 예를 들어 ‘
2
보 전진 후
1
보 후퇴’를
한다면 다음과 같이 쓸 수 있을 겁니다.
let
funds
=
50
;
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