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

function mergeDiffs(Schedulearray1, Schedulearray2) {
    var secondArrayIDs = Schedulearray2.map(x=> x.scheduleid);
    return Schedulearray1.filter(x=> !secondArrayIDs.includes(x.scheduleid)).concat(Schedulearray2);   
}