Task 2.md

Write a blog about objects and its internal representation in Javascript:-

=> Objects are the building blocks of JavaScript, allowing you to create complex structures to organize and manipulate data.

=> In this blog, we’ll dive into the fascinating world of objects and explore their internal representation in JavaScript.

=> JavaScript is an object-based language. Everything is an object in JavaScript.

=> JavaScript is template based not class based. Here, we don't create class to get the object. But, we direct create objects.

Understanding Objects:

=> The Basics In JavaScript, an object is like a container that holds related data and functions, known as properties and methods, respectively. Imagine an object as a real-world object — say, a car. 

=> A car has properties like color, make, and model, and methods like startEngine and brake. Similarly.

=> a JavaScript object can store data (properties) and perform actions (methods).

Internal Representation of Objects :-

=> Objects are stored as a collection of key-value pairs, where the keys are the property names and the values can be data or references to functions.

=> When you access an object’s property or method, JavaScript searches for the property name in the object’s internal collection of key-value pairs. If it finds a match, it returns the corresponding value.

Creating Objects :-

=> You can create objects in JavaScript using Three methods:

    1.By object literal

    2.By creating instance of Object directly (using new keyword)

    3.By using an object constructor (using new keyword)

1.JavaScript Object by object literal:-

Syntax:-

object={
    property1:value1,
    property2:value2.....propertyN:valueN
}

Examples :-

emp={
    id:102,
    name:"Shyam Kumar",
    salary:40000
    }  

console.log(emp.id+" "+emp.name+" "+emp.salary);  

Output:-

102 Shyam Kumar 40000

2.By creating instance of Object:-

Syntax:-

var objectname=new Object();  

//Here, new keyword is used to create object.

Examples :-

var emp=new Object();  
    emp.id=101;  
    emp.name="Ravi Malik";  
    emp.salary=50000;  

console.log(emp.id+" "+emp.name+" "+emp.salary);

Output:-

101 Ravi 50000

3.By using an Object constructor:-

=> Here, you need to create function with arguments. Each argument value can be assigned in the current object by using this keyword.

=> The this keyword refers to the current object.

Examples-

// Constructor function for Person objects

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

// Create a Person object

const myFather = new Person("John", "Doe", 50, "blue");

console.log(myFather.firstName,myFather.lastName,myFather.age,myFather.eyeColor)

Output:-

John Doe 50 blue