[Programmers/JavaScript/Lv.1] 문자열 다루기 기본 정답

정답

function solution(s) {
    let answer = false;
    const l = s.length;
    if(l === 4 || l === 6) {
        answer = !!parseInt(s)
    }
    
    return answer;
}

https://school.programmers.co.kr/learn/courses/30/lessons/12918