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Factory — JavaScript Design Patterns — Part 3
You’ll never have to read a Design Patterns guide again
Welcome back to our series exploring common design patterns used in JavaScript development. In Part 1, we looked at what design patterns are and why they’re useful. Then in Part 2, we dove into the Singleton pattern. Today, we’ll be discussing the Factory pattern — one of the classic creational design patterns.
Imagine you have a toy factory. Instead of making each toy by hand, you have machines that can make different types of toys for you. The “Factory Pattern” in programming is like that machine. Instead of creating objects (or “toys”) directly, you ask a “factory” to do it for you. This way, if you ever want to change how a toy is made, or introduce new types of toys, you just tweak the machine (or “factory”) and everything else continues to work smoothly.
What is a Factory Pattern?
At its core, the Factory pattern is a creational pattern that encapsulates object creation. Instead of using new to create instances of objects directly, it introduces an interface for creating objects, which can be implemented in multiple ways. This allows you to change the type of objects created without affecting the client code that uses them.
