Learning Path: JavaScript: Reactive And Functional JavaScript

Make your JavaScript code efficient, maintainable, and scalable using the best practices of reactive and functional programming

Although JavaScript has many diverse applications, it has become ‘the programming language for the Web’ in the recent times. Almost always, when you see something working smoothly and interactively on the Web, you can assume that there is some JavaScript code running in the background.

Packt’s Video Learning Paths are a series of individual video products put together in a logical and stepwise manner such that each video builds on the skills learned in the video before it.

JavaScript: Reactive and Functional JavaScript begins with describing what JavaScript is and how browsers use it. We get started with the essentials—the JavaScript syntax. This includes comments, operators, variables, conditionals, loops, and functions. With the basics in place, we move on to learn about reactive programming, understand its need, and also look at building simple apps with good understanding of Rx. We will start off with Bacon.js and then move on to using Rx.js for both client-side and server-side applications. The final part of this Learning Path will look at writing maintainable code. You will experience the benefits of functional programming even if your code is not purely functional. You will also learn how to write code that's easy to understand, extend, test, and debug. Hands-on practice on how to use currying, partial evaluation, map, reduce, filter, recursion, and other functional programming concepts in ES6 is also covered.

By the end of this course, you will be able to optimize your JavaScript code.

This course is authored by some of the best instructors in this field:

About the Author

Chip Lambert has been developing websites and web applications for almost 20 years. He is currently a software engineer for Jenzabar Inc. and an online instructor for Bluefield College, teaching courses in web and mobile application development.

Shriyans Bhatnagar uses Rx.js on a daily basis in work, mostly combining it with React and redux. Being a full stack developer, he often finds himself using Rx on Node too. He is extremely passionate about writing functional reactive code.

He started out as a backend engineer writing Ruby applications using rails, but quickly moved on to using JavaScript for both the backend and frontend.

Zsolt Nagy is a web development team lead, mentor, and software engineer living in Berlin, Germany. As a software engineer, Zsolt continuously challenges himself to stick to the highest possible standards when improving his own knowledge. He believes that the best way of learning is to create a meaningful product on the way.

A basic knowledge of HTML and CSS

Familiarity with ECMAScript

Learn JavaScript's basic syntax

Discover the Document Object Model and how to manipulate it with JavaScript and jQuery

Change CSS classes on HTML elements on-the-fly

Introduction to reactive programming + Rx in depth

Create operators and perform various operations such as transform, filter, combine, and error handling

Discover the principles of functional programming

Write elegant code with chaining and context binding

Translate SQL queries into chained map and reduce calls