7-js-objects.md

Objects

A JavaScript object is a collection of named values. The values are written as name : value pairs (name and value separated by a colon).

• javascript objects are mutable

Creating javascript objects:

1. Using object literal

var person = {firstName:"John", lastName:"Doe", age:50, eyeColor:"blue"};

2. Using javascript keyword new

var person = new Object();
person.firstName = "John";
person.lastName = "Doe";
person.age = 50;
person.eyeColor = "blue";

3. Using Object.create()

const Animal = {
  type: 'Invertebrates',
  displayType: function() {
    console.log(this.type);
  }
};

let animal1 = Object.create(Animal);
animal1.displayType(); // Invertebrates