What is data encapsulation in JavaScript?

What is data encapsulation in JavaScript?

Data encapsulation in JavaScript is a concept where data and methods are bundled together, restricting access to some components.

Can you give me an example of how to implement it?

Sure! You can use closures or classes to encapsulate data. For 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

What are the benefits of using data encapsulation?

The benefits include improved code maintainability, reduced complexity, and enhanced security by hiding internal states.

Are there any drawbacks to data encapsulation?

Yes, it can lead to increased complexity and may require more code to manage access to the encapsulated data.