Preface

Functional programming is a style that emphasizes and enables smarter code that minimizes complexity and increases modularity. It's a way of writing cleaner code through clever ways of mutating, combining and using functions. And JavaScript provides an excellent medium for this approach. JavaScript, the internet's scripting language, is actually a functional language at heart. By learning how to expose JavaScript's true identity as a functional language, we can implement web apps that are more powerful, easier to maintain and more reliable. JavaScript's odd quirks and pitfalls will suddenly become clear and the language as a whole will make infinitely more sense. Learning how to use functional programming will make you a better programmer for life.

This course is a guide for both new and experienced JavaScript developers who are interested in learning functional programming. With a focus on the progression of functional programming techniques and styles in JavaScript, detailed information of JavaScript libraries, this course will help you to write smarter code and become a better programmer.

What this learning path covers

Module 1, Mastering JavaScript, provides a detailed overview of the language fundamentals and some of the modern tools and libraries – like jQuery, underscore.js and jasmine.

Module 2, Mastering JavaScript Design Patterns- Second Edition, is divided into two main parts. The first part covers the classical design patterns, which are found in the GoF book whereas the second part looks at patterns, which are either not covered in the GoF book or ones that are more specific to JavaScript.

Module 3, Functional Programming in JavaScript, explores the core concepts of functional programming common to all functional languages, with examples of their use in JavaScript.

What you need for this learning path

All the examples in this course can be run on any of the modern browsers. For the last chapter from first module, you will need Node.js. You will need the following to run the examples and samples from this course:

  • A computer with Windows 7 or higher, Linux or Mac OSX installed
  • Latest version of Google Chrome or Mozilla Firefox browser
  • A texteditor of your choice. Sublime Text, Vi, Atom or Notepad++ would be ideal. The choice is entirely yours.

There are standalone JavaScript engines written in C++ (V8) and Java (Rhino) and these are used to power all sorts of tools such as nodejs, couchdb and even elasticsearch. These patterns can be applied to any of these technologies.

Who this learning path is for

If you are a JavaScript developer interested in learning functional programming, looking for the quantum leap towards mastering the JavaScript language, or just want to become a better programmer in general, then this course is ideal for you. This guide is aimed at programmers, involved in developing reactive front-end apps, server-side apps that wrangle with reliability and concurrency, and everything in between.

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Customer support

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Downloading theexample code

You can download the example code files for this course from your account at http://www.packtpub.com. If you purchased this course elsewhere, you can visit http://www.packtpub.com/support and register to have the files e-mailed directly to you.

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The code bundle for the course is also hosted on GitHub at https://github.com/PacktPublishing/JavaScript--Functional-Programming-for-JavaScript-Developers.We also have other code bundles from our rich catalog of books, courses and videos available at https://github.com/PacktPublishing/. Check them out!

Errata

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Questions

If you have a problem with any aspect of this course, you can contact us at , and we will do our best to address the problem.

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