const list = [1,2,3,4,5] console.log(list[list.length-1]) 5 출처 velog.io/@lilyoh/js-array-%EC%9D%98-%EB%A7%88%EC%A7%80%EB%A7%89-%EC%9A%94%EC%86%8C%EA%B0%92-%EA%B5%AC%ED%95%98%EA%B8%B0