解决数组处理问题？

Question

 let keys = ['a', 'b']

 let vals = [

    [111, 222],

    [333, 444]

 ]

期望结果：

  [{a:111,b:222},{a:333,b:444}]

Answer 1

let result = vals.map(val => keys.reduce((obj, key, i) => [obj[key] = val[i], obj][1], {}))

Answer 2

reduce计数器使用不熟，只好用foreach了let arr = []keys.forEach((item, index) => {    arr[index] = {}    vals.forEach((k, j) => arr[index][keys[j]] = vals[index][j])})