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React 18 Design Patterns and Best Practices

React 18 Design Patterns and Best Practices

By : Carlos Santana Roldán
4.5 (19)
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React 18 Design Patterns and Best Practices

React 18 Design Patterns and Best Practices

4.5 (19)
By: Carlos Santana Roldán

Overview of this book

React helps you work smarter, not harder — but to reap the benefits of this popular JavaScript library and its components, you need a straightforward guide that will teach you how to make the most of it. React 18 Design Patterns and Best Practices will help you use React effectively to make your applications more flexible, easier to maintain, and improve their performance, while giving your workflow a huge boost. With a better organization of topics and knowledge about best practices added to your developer toolbox, the updated fourth edition ensures an enhanced learning experience. The book is split into three parts; the first will teach you the fundamentals of React patterns, the second will dive into how React works, and the third will focus on real-world applications. All the code samples are updated to the latest version of React and you’ll also find plenty of new additions that explore React 18 and Node 19’s newest features, alongside MonoRepo Architecture and a dedicated chapter on TypeScript. By the end of this book, you'll be able to efficiently build and deploy real-world React web applications.
Table of Contents (20 chapters)
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18
Other Books You May Enjoy
19
Index

Using JSX

In Chapter 1, we saw how React changes the concept of separation of concerns, moving the boundaries inside components. We also learned how React uses the elements returned by the components to display the UI on the screen.

Let’s now look at how we can declare elements inside our components.

React provides two ways to define elements. The first one is by using JavaScript functions, and the second one is by using JSX, an optional XML-like syntax. The following is a screenshot of the new official documentation of React.js (https://react.dev):

Graphical user interface, website  Description automatically generated

Figure 3.1: New official documentation site of React.js

To begin with, JSX is one of the main reasons why people fail to approach React, because looking at the examples on the home page and seeing JavaScript mixed with HTML for the first time can seem strange to most of us.

As soon as we get used to it, we realize that it is very convenient, precisely because it is similar to HTML and looks very familiar...

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