Object.assign()
by dshilkret
HTML
http://jsfiddle.net/dshilkret/jgxq713z/#run
JavaScript
'use strict'
let one = { a: 1, b: 2, c: 3};
let two = { b: 20, c: 30, d: 40 };
let three = Object.assign({}, one, two);
console.log(three);
var x = { id: 1, name: "myObject" }
Object.assign(x, { id: 2, name: "myNewObject" });
x.dog = "dog";
console.log(x);
console.log(typeof(x));