Exploring Class Patterns in JavaScript: From Factories to Builders

Dive into the World of Class Patterns and Learn How to Implement Them in JavaScript

Photo by Karan Nagpal on Unsplash

Class patterns are essential design patterns in software development that provide solutions to common problems encountered when designing and implementing classes. In JavaScript, understanding and implementing class patterns can greatly improve code organization, scalability, and maintainability.

In this article, we’ll explore several class patterns, including Factory, Singleton, and Builder, and provide up-to-date code examples to illustrate their usage.

Factory Pattern

The Factory pattern is used to create objects without specifying the exact class of object that will be created. Instead, a factory function or method is responsible for creating instances based on provided parameters. Here’s an example:

class Car {
  constructor(brand) {
    this.brand = brand;
  }
}

class CarFactory {
  createCar(brand) {
    return new Car(brand);
  }
}

const carFactory = new CarFactory();
const myCar = carFactory.createCar('Toyota');
console.log(myCar); // Output: Car { brand: 'Toyota' }

In this example, the CarFactory class is responsible for creating instances of the…