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The React Workshop

The React Workshop

By : Brandon Richey , Ryan Yu , Endre Vegh , Theofanis Despoudis , Anton Punith , Florian Sloot
4.4 (10)
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The React Workshop

The React Workshop

4.4 (10)
By: Brandon Richey , Ryan Yu , Endre Vegh , Theofanis Despoudis , Anton Punith , Florian Sloot

Overview of this book

Are you interested in how React takes command of the view layer for web and mobile apps and changes the data of large web applications without needing to reload the page? This workshop will help you learn how and show you how to develop and enhance web apps using the features of the React framework with interesting examples and exercises. The workshop starts by demonstrating how to create your first React project. You’ll tap into React’s popular feature JSX to develop templates and use DOM events to make your project interactive. Next, you’ll focus on the lifecycle of the React component and understand how components are created, mounted, unmounted, and destroyed. Later, you’ll create and customize components to understand the data flow in React and how props and state communicate between components. You’ll also use Formik to create forms in React to explore the concept of controlled and uncontrolled components and even play with React Router to navigate between React components. The chapters that follow will help you build an interesting image-search app to fetch data from the outside world and populate the data to the React app. Finally, you’ll understand what ref API is and how it is used to manipulate DOM in an imperative way. By the end of this React book, you’ll have the skills you need to set up and create web apps using React.
Table of Contents (20 chapters)
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Preface

What Is async/await?

In the previous section, we learned what a promise is and went through an exercise to see how to use it when fetching data from a server. Promises allow us to easily handle asynchronous operations. Since ECMAScript 2017, async/await has been added, and it provides a new way to write asynchronous code. However, async/await is not a completely new feature; rather it is a syntax sugar on top of promises, and it makes asynchronous code easier to read and write.

Note

async/await is not supported in Internet Explorer and older browsers, so please use it with caution.

As the name async/await suggests, it consists of two keywords, async and await. Let's talk about the async function first.

async

The async function helps us to write promise-based code in a synchronous fashion but without blocking the execution thread. The rest of the code runs in parallel along with its execution.

The async keyword is added before the function, and that means the...

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