我有一个数组 A = [1,3]
- 它存储来自另一个数组 B = ["answer1","answer2","answer3","answer4"]
的正确答案的位置。
我需要得到一个数组 C,它将由正确的答案组成,类似于 ["answer1","answer3"]
。
示例:如果数组 A 由 1 个元素组成(例如 A = [2]
),则数组 C 应该类似于 C = ["answer2"]
。>
当我有一个由 1 个元素组成的数组 A 时,我可以用 indexOf()
解决这个问题。但是当有 2 个或更多元素时,我会卡住
答案 0 :(得分:5)
你应该这样做:
let A = [1,3];
let B = ["answer1","answer2","answer3","answer4"];
let C = A.map(i => B[i-1]);