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Mastering Reactive JavaScript

Mastering Reactive JavaScript

By : Erich de Souza Oliveira
3.5 (4)
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Mastering Reactive JavaScript

Mastering Reactive JavaScript

3.5 (4)
By: Erich de Souza Oliveira

Overview of this book

If you’re struggling to handle a large amount of data and don’t know how to improve your code readability, then reactive programming is the right solution for you. It lets you describe how your code behaves when changes happen and makes it easier to deal with real-time data. This book will teach you what reactive programming is, and how you can use it to write better applications. The book starts with the basics of reactive programming, what Reactive Extensions is, and how can you use it in JavaScript along with some reactive code using Bacon. Next, you’ll discover what an Observable and an Observer are and when to use them.You'll also find out how you can query data through operators, and how to use schedulers to react to changes. Moving on, you’ll explore the RxJs API, be introduced to the problem of data traffic (backpressure), and see how you can mitigate it. You’ll also learn about other important operators that can help improve your code readability, and you’ll see how to use transducers to compose operators. At the end of the book, you’ll get hands-on experience of using RxJs, and will create a real-time web chat using RxJs on the client and server, providing you with the complete package to master RxJs.
Table of Contents (12 chapters)
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Installation of tools

Before we start to use reactive programming, we need to install the tools we will be using throughout this book.

Node.js

We will be using node version 6.9.1, the most recent LTS version of nodes at the time of writing. You can find versions of it for Windows, Mac, and Linux at the following link:

https://nodejs.org/en/download/releases/.

We are going to use a lot of arrow functions throughout this book, so we expect you to have familiarity with this ES6 feature. You can run the codes described here in any node version above 4.x.

bacon.js

In this first chapter of this book we will be using bacon.js , which is a library for functional reactive programming in JavaScript. This library works in both server and client. We will use it to introduce you to some concepts of functional reactive programming as it is easier to get started. We will be using version 0.7.88.

To install it on your server, just run the following command inside a node project:

    npm i [email protected] -save

To add it to an HTML page, just paste the following code snippet inside it:

<script src="https://cdnjs.cloudflare.com/ajax/libs/bacon.js/0.7.88/Bacon.min.js"> 
</script>
Don't worry with the version not being above 1.x; bacon.js is stable.

RxJS

The last tool we need to follow in this book is RxJS; we will use this library in later chapters. This library also runs in both client and server and we will be using version 4.1.0.

To install it on your server, just run the following command inside a node project:

    npm i [email protected] -save

To add it to an HTML page, just paste the following code snippet inside it:

<script src="https://cdnjs.cloudflare.com/ajax/libs/rxjs/4.1.0/rx.all.js"> 
</script>
For those using other package managers, you can also install bacon.js and RxJS from Bower and NuGet.
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