Accessors

In JavaScript, object properties can be obtained using accessors. Properties are established and retrieved with methods known as “getters” and “setters”.

The get keyword is used to define a getter method for establishing a custom behavior when accessing the values of object properties, while the set keyword is used to create a setter method that determines the behavior when assigning values to those properties.

Syntax

There are two ways to access properties: dot notation and bracket notation.

const object = {
    get propertyName() {}
}

object.propertyName
object[propertyName]

Example

The following example defines a User class with a constructor and a getter method. It demonstrates how to encapsulate and access the email information of a user using accessor methods.

class User {
  constructor(name, email) {
    this._name = name;
    this._email = email;
  }

  get userEmail() {
    return this._email;
  }
}

const person = new User('eddy', '[email protected]');
console.log(person.userEmail);

This example results in the following output:

[email protected]