JavaScript Object Literal

An object literal is a list of property names:values inside curly braces {}.

{firstName:"John", lastName:"Doe", age:28};
              

Creating a JavaScript Object

Examples:
Create an empty JavaScript object using {}, and add properties:

// Create an Object
const person = {};

// Add Properties
person.firstName = "John";
person.lastName = "Doe";
person.age = 28;
              

Create an empty JavaScript object using new Object(), and add properties:

// Create an Object
const person = new Object();

// Add Properties
person.firstName = "John";
person.lastName = "Doe";
person.age = 28;
              

Object Constructor Functions

To create an object type we use an object constructor function.

Object Type Person

       
function Person(first, last, age) {
  this.firstName = first;
  this.lastName = last;
  this.age = age;
}