How to merge objects?

javascript angularjs merge javascript-objects extends

TrtG · Feb 12, 2015 · Viewed 67.8k times · Source

For instance, from these two objects :

var object1 = {
  "color": "yellow",
  "size": null,
  "age": 7,
  "weight": null
}

var object2 = {
  "color": "blue",
  "size": 51,
  "age": null
}

I want this (object2 overrides object1 except for null properties or properties he doesn't have):

{
  "color": "blue",
  "size": 51,
  "age": 7,
  "weight": null
}

Answer

var src = { name: 'Apple', price: 5};
var dst= angular.copy(src);

var mergedObject = angular.extend(dst, src1, src2, ...)

var mergedObject = angular.merge(dst, src);

If you want to not overwrite with null, you can use this.

let movie2 = Object.assign({}, movie1, { episode: 8 });

Sources: