Replicating instances with factories

Like builders, factories are a way of organizing object construction. They differ from builders in how they are organized. Often, the interface of factories is a single function call. This makes factories easier to use, if less customizable, than builders.

In this recipe, we'll see how to use factories to easily replicate instances.

Getting ready

This recipe assumes you already have a workspace that allows you to create and run ES modules in your browser. If you don't, please see the first two chapters.

How to do it...

1. Open your command-line application and navigate to your workspace.
2. Create a new folder named 09-03-replicating-instances-with-factories.
3. Copy or create an index.html that loads and runs a main function from main.js.

4. Create a main.js file that defines a new class named Mission. Add a constructor that takes a name constructor argument and assigns it to an instance property. Also, define a simple describe method:

// main.js 
class Mission { 
  constructor...