Book Image

React and React Native - Third Edition

By : Adam Boduch, Roy Derks
Book Image

React and React Native - Third Edition

By: Adam Boduch, Roy Derks

Overview of this book

React and React Native, Facebook’s innovative User Interface (UI) libraries, are designed to help you build robust cross-platform web and mobile applications. This updated third edition is improved and updated to cover the latest version of React. The book particularly focuses on the latest developments in the React ecosystem, such as modern Hook implementations, code splitting using lazy components and Suspense, user interface framework components using Material-UI, and Apollo. In terms of React Native, the book has been updated to version 0.62 and demonstrates how to apply native UI components for your existing mobile apps using NativeBase. You will begin by learning about the essential building blocks of React components. Next, you’ll progress to working with higher-level functionalities in application development, before putting this knowledge to use by developing user interface components for the web and for native platforms. In the concluding chapters, you’ll learn how to bring your application together with a robust data architecture. By the end of this book, you’ll be able to build React applications for the web and React Native applications for multiple mobile platforms.
Table of Contents (33 chapters)
Section 1: React
Section 2: React Native
Section 3: React Architecture

Using reducer Hooks to scale state management

The useState() Hook is a great way to manage the state of your component. It can become a challenge to use this Hook when your component has a lot of related pieces of state. You end up with a lot of setter functions that you need to call individually, once you've figured out how a change in one state value affects another state value. With reducers, you have one dispatch() function that's used to update the state of your component.

In this section, you'll learn about the basics of reducer actions and how they update the state of your component. Then, we'll look at a more in-depth example that shows you how to handle updating state values that depend on other state values.

Using reducer actions

A reducer function in a React application is a function that takes the current state, an action, and any other arguments that are needed to update the state. It returns the new state of the component. The action argument tells the...