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The React Workshop

You're reading from   The React Workshop Get started with building web applications using practical tips and examples from React use cases

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Product type Paperback
Published in Aug 2020
Publisher Packt
ISBN-13 9781838645564
Length 806 pages
Edition 1st Edition
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Authors (6):
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Florian Sloot Florian Sloot
Author Profile Icon Florian Sloot
Florian Sloot
Ryan Yu Ryan Yu
Author Profile Icon Ryan Yu
Ryan Yu
Brandon Richey Brandon Richey
Author Profile Icon Brandon Richey
Brandon Richey
Endre Vegh Endre Vegh
Author Profile Icon Endre Vegh
Endre Vegh
 Theofanis Despoudis Theofanis Despoudis
Author Profile Icon Theofanis Despoudis
Theofanis Despoudis
Anton Punith Anton Punith
Author Profile Icon Anton Punith
Anton Punith
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Toc

Table of Contents (20) Chapters Close

Preface
1. Getting Started with React 2. Dealing with React Events FREE CHAPTER 3. Conditional Rendering and for Loops 4. React Lifecycle Methods 5. Class and Function Components 6. State and Props 7. Communication between Components 8. Introduction to Formik 9. Introduction to React Router 10. Advanced Routing Techniques: Special Cases 11. Hooks – Reusability, Readability, and a Different Mental Model 12. State Management with Hooks 13. Composing Hooks to Solve Complex Problems 14. Fetching Data by Making API Requests 15. Promise API and async/await 16. Fetching Data on Initial Render and Refactoring with Hooks 17. Refs in React 18. Practical Use Cases of Refs Appendix

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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