What is encapsulation in JavaScript OOP?

What is encapsulation in JavaScript OOP?

Encapsulation is a fundamental concept in object-oriented programming that restricts access to certain components of an object. In JavaScript, it allows you to bundle data and methods that operate on that data within a single unit, typically a class.

Can you give me an example of encapsulation in JavaScript?

Sure! Here's a simple example:

class Person {
    constructor(name, age) {
        this._name = name; // private property
        this._age = age;  // private property
    }

    getName() {
        return this._name;
    }

    getAge() {
        return this._age;
    }
}

const person = new Person('Alice', 30);
console.log(person.getName()); // Alice
console.log(person.getAge());  // 30

What are the benefits of using encapsulation?

Encapsulation helps in data hiding, reduces complexity, and increases code maintainability. It allows you to change the internal implementation without affecting the external code that uses the object.

Are there any drawbacks to encapsulation?

One drawback is that it can lead to more complex code if overused. Additionally, it may introduce performance overhead due to the additional methods for accessing properties.