Encapsulation in JavaScript

 Encapsulation in JavaScript

Encapsulation is a principle of OOP that refers to the idea of bundling data and methods that operate on that data within a single unit (i.e., a class). In JavaScript, you can use closures to create private variables and methods.

Here's an example of how to use closures to create private variables and methods in JavaScript:

javascript

class Counter {

  constructor() {

    let count = 0;

    

    this.increment = function() {

      count++;

      console.log(`Count: ${count}`);

    }

    

    this.decrement = function() {

      count--;

      console.log(`Count: ${count}`);

    }

  }

}

const counter = new Counter();

counter.increment(); // prints "Count: 1"

counter.increment(); // prints "Count: 2"

counter.decrement(); // prints "Count: 1"