What is encapsulation in JavaScript?

What is encapsulation in JavaScript?

Encapsulation is a programming concept that restricts access to certain components of an object. In JavaScript, it can be achieved using closures or the class syntax.

Can you give me an example of encapsulation in JavaScript?

Sure! Here's a simple example using a class:

class Person {
    constructor(name, age) {
        let _name = name; // private variable
        let _age = age;  // private variable

        this.getName = function() { return _name; };
        this.getAge = function() { return _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 by restricting access to the internal state of an object.