Classes in JavaScript

• Classes are the core feature of next generation JavaScript. Classes are generally blueprints of objects. A Class can have both properties and methods.
• Methods are functions attached to classes where properties acts as variables and are attached to classes.
• A Class is instantiated with a new keyword.
• Classes also support Inheritance. A class can inherit another class and use its properties and methods.
• Constructor is a default method used for creating and initializing an object created with the class. This is automatically executed whenever you instantiate a class. In this, you can set up properties with this keyword.
• Let’s see an example:

class Person{
  constructor(){
    // setting up properties using this keyword
    this.name="Akanksha";
    this.address="Delhi";  
  }
  // creating a custom method within a class
  getName(){
    console.log("Name: " + this.name + " and Location: " + this.address);
  }
}

// creating an object of the class using new keyword.
// constructor function is called as soon as you instantiate a class using new keyword
const prsn = new Person();

// calling method using the object of the class
prsn.getName();

You can also pass the data while instantiating the class

Related Article: Inheritance in JavaScript