[Design Patterns in Javascript] The Observer Design Pattern in Javascript

The Observer Design Pattern is used to allow an object to notify other objects of things that are happening without creating a direct dependency on those other objects. It's a really powerful pattern that can clean up your code tremendously if you use it properly.

Want to move out of the beginner and intermediate programming levels into being more advanced? One of the things that will help get you there is learning design patterns.

This is the third episode in a new series we are doing on design patterns in javascript.

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Building a Messenger app in Rails 6: https://www.youtube.com/watch?v=s3CmHhDjuWc&t=18s

Action Cable Basics in Rails 6: https://youtu.be/t9iubpbqmnM

Building a Link Shortener with Rails 6 (playlist): https://www.youtube.com/playlist?list=PLjItgYqIzJ9WGy9WMf-44DXHB_7aWwJMc

Building a Stock Market Tracker with React JS (playlist): https://www.youtube.com/playlist?list=PLjItgYqIzJ9VOBgwZ82D9kjQ_QtM5R4u5