Understanding JavaScript Object-Oriented Programming

Introduction to JavaScript Object-Oriented Programming

Object-oriented programming (OOP) is a programming paradigm that uses objects and classes to organize and structure code.

Step 1: Creating a Class

In JavaScript, you can create a class using the class keyword.

class Person {
    constructor(name, age) {
        this.name = name;
        this.age = age;
    }
}

Step 2: Creating an Object

You can create an object from a class using the new keyword.

class Person {
    constructor(name, age) {
        this.name = name;
        this.age = age;
    }
}
let person = new Person('John Doe', 30);
console.log(person);

Step 3: Inheritance

You can use inheritance to create a new class that inherits properties and methods from an existing class.

class Person {
    constructor(name, age) {
        this.name = name;
        this.age = age;
    }
}
class Employee extends Person {
    constructor(name, age, salary) {
        super(name, age);
        this.salary = salary;
    }
}
let employee = new Employee('John Doe', 30, 50000);
console.log(employee);

By following these steps, you can learn how to use object-oriented programming concepts in JavaScript.