How to map array with array objects

Question

I have an array 1:

['a', 'b', 'c']

And array 2:

[{ a: 1, b: 2, c: 3, d: 5 }]

How to combine 2 arrays as below:

[{a: 1, b: 2: c: 3}]

The result only includes the items in first array. I want an optimal solution.

Please visit the [help], take the [tour] to see what and [ask]. Do some research, search for related topics on SO; if you get stuck, post a [mcve] of your attempt, noting input and expected output using the `[<>]` snippet editor. — mplungjan, Jul 23 '20 at 10:42

user2314737 · Answer 1 · 2020-07-23T12:05:07.230

0

A solution using reduce

a1 = ['a', 'b', 'c', 'e'];
a2 = [{ a: 1, b: 2, c: 4, d: 5 }];

a = a1.reduce((a,key) => [... a, {[key]: a2[0][key]}], []);


console.log(a);

In case a key from the first array is missing in the second array, its value will be set as undefined.

edited Jul 23 '20 at 12:05

answered Jul 23 '20 at 11:37

user2314737

1 Answers1