javascript - 匹配两个javascript数组以形成交集结果

Question

找到路口的简写和最佳方法是什么？

f = ["A","B","C","D","E","F"]; //might be less than 8
b = [1,0,0,1,0,0,0,0];   //always 8 elements 

所需的结果数组 ["A","D"]

Answer 1

你可以使用 Array#filter

var f = ["A", "B", "C", "D", "E", "F"],
    b = [1, 0, 0, 1, 0, 0, 0, 0],
    r = f.filter((_, i) => b[i]);

console.log(r);