How do I implement encapsulation in JavaScript classes?

How do I implement encapsulation in JavaScript classes?

Encapsulation in JavaScript classes can be achieved using private fields and methods. You can define private properties using the # syntax.

Can you give me an example of that?

Sure! Here's a simple example:

class Person {
    #name;
    constructor(name) {
        this.#name = name;
    }
    getName() {
        return this.#name;
    }
}

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

What if I want to modify the private property?

You can create a public method within the class to modify the private property. For example:

setName(newName) {
    this.#name = newName;
}

Is encapsulation important in JavaScript?

Yes, encapsulation helps in protecting the internal state of an object and reduces the risk of unintended interference.