Object

Introduction:

In programming, an object is a collection of data (properties) and methods (functions) that operate on that data.

Key Concepts:

• Key: A unique identifier for a property.
• Value: The data associated with a key.
• Properties: Key-value pairs that store data.
• Methods: Functions that perform actions on the object's data.

Creating an Object:

To create an object in JavaScript, use curly braces ({}):

const person = {
  name: "John",
  age: 30,
  greet: function() { console.log(`Hello, my name is ${this.name}`); }
};

Accessing Properties and Methods:

• To access a property, use the dot (.) notation: person.name.
• To invoke a method, use the dot notation followed by parentheses: person.greet().

Unordered Collections of Key-Value Pairs:

Objects can also be used to store unordered collections of key-value pairs:

const fruits = {
  apple: "red",
  banana: "yellow",
  orange: "orange"
};

Key Points:

• Objects represent real-world entities with properties and behaviors.
• Properties are key-value pairs that store data.
• Methods are functions that perform actions on the object's data.
• Objects can also be used as unordered collections of key-value pairs.
• JavaScript objects are enclosed in curly braces ({}) and use the dot notation to access properties and methods.