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React and React Native

React and React Native

By : Adam Boduch, Roy Derks, Mikhail Sakhniuk
4.6 (17)
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React and React Native

React and React Native

4.6 (17)
By: Adam Boduch, Roy Derks, Mikhail Sakhniuk

Overview of this book

Over the years, React and React Native has proven itself among JavaScript developers as a popular choice for a complete and practical guide to the React ecosystem. This fourth edition comes with the latest features, enhancements, and fixes to align with React 18, while also being compatible with React Native. It includes new chapters covering critical features and concepts in modern cross-platform app development with React. From the basics of React to popular components such as Hooks, GraphQL, and NativeBase, this definitive guide will help you become a professional React developer in a step-by-step manner. You'll begin by learning about the essential building blocks of React components. As you advance through the chapters, you'll work with higher-level functionalities in application development and then put your knowledge to work by developing user interface components for the web and native platforms. In the concluding chapters, you'll learn how to bring your application together with 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 (36 chapters)
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1
Part 1 – React
15
Part 2 – React Native
31
Part 3 – React Architecture

Initializing properties and state

In this section, you'll see how to implement the initialization code in React components. This involves using life cycle methods that are called when the component is first created. First, you'll implement a basic example that sets the component up with data from the API. Then, you'll see how the state can be initialized from properties, and also how the state can be updated as properties change.

Fetching component data

When your components are initialized, you'll want to populate their state or properties. Otherwise, the component won't have anything to render other than its skeleton markup. For instance, let's say you want to render the following user list component:

const ErrorMessage = ({ error }) =>
  error ? <strong>{error}</strong> : null;
 
const LoadingMessage = ({ loading }) =>
  loading ? <em>{loading}</em> : null;
 
function UserList({ error, loading...

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