Objects in JavaScript: Unveiling the Power of OOP

// Object literal
const person = {
  name: "Alice",
  age: 30,
  greet: function() {
    console.log(`Hello, my name is ${this.name} and I'm ${this.age} years old.`);
  },
};

person.greet(); // Output: Hello, my name is Alice and I'm 30 years old.

// Object constructor
const person = new Object();
person.name = "Bob";
person.age = 25;
person.greet = function() {
  console.log(`Hello, my name is ${this.name} and I'm ${this.age} years old.`);
};

person.greet(); // Output: Hello, my name is Bob and I'm 25 years old.

const car = {
  brand: "Toyota",
  model: "Camry",
  year: 2022,
  start: function() {
    console.log(`${this.brand} ${this.model} is starting...`);
  },
};

console.log(car.brand); // Output: Toyota
car.start(); // Output: Toyota Camry is starting...

// Object prototype
const animal = {
  makeSound: function() {
    console.log("Generic animal sound");
  },
};

// Object with inheritance
const cat = Object.create(animal);
cat.name = "Whiskers";
cat.makeSound = function() {
  console.log("Meow!");
};

cat.makeSound(); // Output: Meow!

// Constructor function
function Person(name, age) {
  this.name = name;
  this.age = age;
  this.greet = function() {
    console.log(`Hello, my name is ${this.name} and I'm ${this.age} years old.`);
  };
}

// Creating objects using the constructor
const alice = new Person("Alice", 30);
const bob = new Person("Bob", 25);

alice.greet(); // Output: Hello, my name is Alice and I'm 30 years old.
bob.greet();   // Output: Hello, my name is Bob and I'm 25 years old.