objects property javascript code example

Example 1: 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";

Example 2: make an object javascript

class ObjectLayout {
	constructor() {
    	this.firstName = "Larry"; //property
    }
  
  	sayHi() { // Method
    	return `Hello from ${this.firstName}`;
    }
}

const object = new ObjectLayout();
// object.firstName is Larry;
// object.sayHi() gives "Hello from Larry"