JavaScript merging objects by id

Question

What\'s the correct way to merge two arrays in Javascript?

I\'ve got two arrays (for example):

var a1 = [{ id : 1, name : \"test\"}, { id : 2, name :         


        

Answer 1

Short ES6 solution

const a3 = a1.map(t1 => ({...t1, ...a2.find(t2 => t2.id === t1.id)}))