Merge object together

Question

I have 2 objects that I want merge together

Object1 = {'1234':{name: 'One'},'4567': {name: 'two'}}
Object2 = {'1234':{id: 1234, location: 'paris'},'4567':{id: 4567, location: 'london'}}

If the id match the object key , merge it it.

I want a result like this:

Object3 = {'1234':{id: 1234, name: 'One', location: 'paris'},'4567':{id: 4567, name: 'two', location: 'london'}}

If I try spread operator or Object.assign , it overwrite the previous object.

`Object2` is not valid. It has no keys. It looks like it should be an array. — Barmar, Jun 08 '21 at 17:33
Your second object isn't valid JavaScript, so the parser is going to fail long before you ever even try to test your logic. — David, Jun 08 '21 at 17:33
Loop through the properties of one object, merging it with the corresponding property of the other object using `Object.assign()` or spread. — Barmar, Jun 08 '21 at 17:37
Yes I know , I already try something like Object3 = {...Object1, ...Object2} but nothing work — Rodrigo_devs, Jun 08 '21 at 17:42

score -1 · Accepted Answer · answered Jun 08 '21 at 17:43

You most likely want to iterate through one of the objects and merge each value.

const Object1 = {'1234':{name: 'One'},'4567': {name: 'two'}};
const Object2 = {'1234':{id: 1234, location: 'paris'},'4567':{id: 4567, location: 'london'}};
const Object3 = {};

for (let key in Object1) {
    Object3[key] = {...Object2[key], ...Object1[key]}
}

console.log(Object3);

Additionally you can add some if statements to check whether or not key exist in both objects.

Merge object together

1 Answers1