Book Image

React Native - Building Mobile Apps with JavaScript

By : Vladimir Novick
Book Image

React Native - Building Mobile Apps with JavaScript

By: Vladimir Novick

Overview of this book

<p>The emergence of React Native has made creating mobile apps in JavaScript easier for developers. This book introduces you to the React Native framework and the mobile apps development process. It starts with how React Native fits into the world of hybrid apps, and why it’s a popular framework. You’ll learn how React Native works under the hood--compiling JavaScript to Native code to bridge JavaScript and native apps. Also, you’ll learn how to write React Native components and use the ReactJS way of structuring your app. Understand how to use the industry standard Redux architecture as well as MobX--a newly emerging approach for state management--making your apps more robust and scalable.</p> <p>The mobile native world can be intimidating, with lots of platform-specific APIs. In this book, you’ll learn about the most important APIs with help of the real-world examples. You’ll also learn about the community packages that can help speed up your development. The book explains how to use these packages with JavaScript code, include native modules in your application, and write the modules yourself. Throughout the book, you will see examples of WhatsApp, Instagram, and YouTube apps and learn how to recreate them. You’ll also learn debugging and testing techniques, authentication, dealing with real data, and much more.</p> <p>At the end we will walk through design to production process of Twitter app clone and will explain application release process to App Store and Play Store</p>
Table of Contents (13 chapters)

Stateful versus presentational components

So we've seen that we can compose React Native components as well as create our own components and pass data from one to another. In React, there are two important component types, so let's understand what they are and how they are different, but first let's understand the terminology:

  • Stateful: When something is stateful, it is a central point that stores information in memory about the app or component's state. It also has the ability to change it.
  • Stateless: When something is stateless, it calculates its internal state but it never directly mutates it. This allows for complete referential transparency, meaning that given the same inputs, it will always produce the same output.

I've mentioned in chapter 1, Understanding why React Native is the future of mobile apps, how information is flown through the React...