add object to object property code example

Example 1: js create object with properties

function Car(make, model, year) {
  this.make = make;
  this.model = model;
  this.year = year;
}

Example 2: Add New Properties to a JavaScript Object

var myDog = {
  "name": "Happy Coder",
  "legs": 4,
  "tails": 1,
  "friends": ["freeCodeCamp Campers"]
};

myDog.bark = "woof";
// or
myDog["bark"] = "woof";