Learn to Write Functional Javascript [Video]

More Information
  • Understand pure functions and how to refactor impure functions
  • Learn why grouping pure functions can simplify an apps mental model
  • See how impurities break that modal and how to isolate them
  • Create reusable functions by writing higher-order functions
  • Write more declarative and expressive code without loops
  • Master map, filter and reduce, three very powerful functional utilities
  • Create your own higher-order functions to replace native JS Array methods
  • Learn about partial application and create your own curry implementation
  • Learn about immutability, persistent data structures and their pros and cons
  • Work with nested immutable data with lenses using Ramda
  • Write pure functions to model the DOM and then drop JSX on top of it
  • Replace our DOM Rendering function with virtual-dom
  • Build JSX & Virtual-DOM into functional ES2017 apps without using React

Functional programming has been around for decades, but it only overtook the JavaScript community in recent years. The impact is undeniable and yet with all the material available it still isn’t always easy to grok.

This course delivers the building blocks of the functional paradigm in a way that makes sense to JavaScript developers. Animated visualizations help explain difficult concepts such as higher-order functions, lenses and persistent data, partial application and currying and then write code so you understand concepts before trying to apply the knowledge them.

Many functional programming videos leave students feeling as if they just learned something that can’t quite be useful, but in Foundations of Functional Programming you’ll build stateless UI components and implement your own higher-order functions that integrate them with JSX and virtual-dom using no frameworks, just functional programming and modern JavaScript.

Style and Appraoch

We’ll cover new concepts and go over them, usually step by step first with visualisations and then use those concepts writing practical examples in JavaScript. You can follow along using the course materials.

  • Functional Programming in context that matters for web developers
  • Learn how the functional style can help you code better starting today
  • Experience and practice the critical concepts required to master functional programming
Course Length 3 hours 48 minutes
ISBN 9781788290616
Date Of Publication 28 May 2017


Michael Rosata

Michael Rosata is a professional JavaScript developer and the author of three courses on Functional JavaScript. He’s written multiple JavaScript applications for internal use at large companies. Michael is the founder of the Massachusetts Web Devs meetup. He has a great passion for learning, and teaching

You can find him answering questions in the Ramda gitter channel or at michael.rosata@gmail.com

I’d like to thank my family for giving me the opportunity to explore things I enjoy learning, and to the team at Packt Publishing, especially Sunny Kandre and Anish Dsouza for making this course possible.