Comments (2)
Heojiyeon
commented on August 21, 2024
Q1. 출력 결과와 그 이유를 작성해주세요.
const set = new Set([1, 2, 3]);
set.size = 10;
console.log(set.size); // ?
정답
3, size 프로퍼티는 setter함수 없이 getter 함수만 존재하는 접근자 프로퍼티로, size 프로퍼티에 숫자를 할당하여 set 객체의 요소 개수를 변경할 수 없다.
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SDWoo
commented on August 21, 2024
Q1. 해당 배열을 중복없이 정렬해보시오!
const arr = [8,7,6,5,7,8,9,3,2,4,1];
console.log(answer); // -> [1, 2, 3, 4, 5, 6, 7, 8, 9]정답
[... new Set(arr)].sort((a,b)=> a-b)
=> 스프레드 문법과 Set을 통해 중복을 제거한 후 정렬한다!
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