javascript - 如何将数组中的每个元素与不同数组中的其他元素合并？

Question

假设我们有 2 个数组，我们希望返回一个包含每个 array1[element] + (数组 2 中的其余元素)的数组，依此类推。

let array1 = ["a","b"];
let array2 = ["e","f"];

let array3 = mergeArrays(array1,array2);// ["ae","af","be","bf"]

// I tried something like this

let output = [];
let x = 0;
for (let i = 0;i< variants.length;i++){
   for (let j = 0;j < variants[i].length;j++){
       output[x] = variants[i][x] + variants[j][x];
       x++;
   }
}

Answer 1

使用两张 map 并进行展平:

let array1 = ["a","b"];
let array2 = ["e","f"];

let array3 = array1.map(a => array2.map(b => a + b)).flat();
console.log(array3);