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

None of them worked for me. I wrote own:

const formatteddata=data.reduce((a1,a2)=>{

for (let t=0; t

works with any amount of arrays of objects in arrays, with varying length and not always coinsciding dates