Object in Javascript

Object in Javascript are “name value pairs” and this name value pairs are called Object Properties

for Example :

	var person = {
	name : "Deepak",
	place : "delhi"
	};

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person is Object which has two properties name and place

setting property

	person.job = "Javascript Developer";
	person["job"] = "Javascript Developer";

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getting property

	person.name // "deepak"
	person.place // "delhi"
	person.job // "Javascript Developer"
	person["name"] // "deepak"
	person["place"] // "delhi"
	person["job"] // "Javascript Developer"

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There are three way to create object in Javascript

1. using an object literal

         

	var person = {
	name : "Deepak",
	place : "delhi"
	};

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2. using new keyword

        

	var person = new Object();
	person.name = "deepak";
	person.place = "delhi";

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3. inheriting Object.prototype

   

         

	var person = Object.create(Object.prototype);
	person.name = "deepak";
	person.place = "delhi";

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Everything in Javascript is Object

Everything in Javascript is Object except primitive values

primitive values are strings, numbers, true, false and undefined.

	var str = "deepak";
	console.log(typeof str); // string
	var num = 2;
	console.log(typeof num); // number
	var bool = true;
	console.log(typeof bool); // boolean
	var x;
	console.log(typeof x); // undefined

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Dates are always objects

Arrays are always objects

Functions are always objects

Objects are objects

	var date = new Date();
	console.log(typeof date); // object
	var date = ["deepak", "chetan", "narendra"];
	console.log(typeof date); // object
	function myFunction(a, b) {
	return a + b;
	}
	console.log(typeof myFunction); // function
	var person = {
	name : "deepak",
	place : "delhi"
	};
	console.log(typeof person); // object

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See the link of examples
Object in Javascript
Type of operator