Observer Design Pattern - Beau teaches JavaScript

With the Observer Design Pattern, if an object is modified it broadcasts to dependent objects that a change has occurred. Code 🔗 http://codepen.io/beaucarnes/pen/mRaoyK?editors=0012 Other resources on topic: 🔗 https://scotch.io/bar-talk/4-javascript-design-patterns-you-should-know 🔗 http://robdodson.me/javascript-design-patterns-observer/ Beau Carnes on Twitter: https://twitter.com/carnesbeau ⭐JavaScript Playlists⭐ ▶JavaScript Basics: https://www.youtube.com/playlist?list=PLWKjhJtqVAbk2qRZtWSzCIN38JC_NdhW5 ▶ES6: https://www.youtube.com/playlist?list=PLWKjhJtqVAbljtmmeS0c-CEl2LdE-eR_F ▶Design Patterns: https://www.youtube.com/playlist?list=PLWKjhJtqVAbnZtkAI3BqcYxKnfWn_C704 ▶Data Structures and Algorithms: https://www.youtube.com/playlist?list=PLWKjhJtqVAbkso-IbgiiP48n-O-JQA9PJ ▶Clean Code: https://www.youtube.com/playlist?list=PLWKjhJtqVAbkK24EaPurzMq0-kw5U9pJh - We're busy people who learn to code, then practice by building projects for nonprofits. Learn Full-stack JavaScript, build a portfolio, and get great references with our open source community. Join our community at https://freecodecamp.com Follow us on twitter: https://twitter.com/freecodecamp Like us on Facebook: https://www.facebook.com/freecodecamp Follow Quincy on Quora: https://www.quora.com/Quincy-Larson ❤️ Support for this channel comes from our friends at Scrimba – the coding platform that's reinvented interactive learning: https://scrimba.com/freecodecamp