Book Image

React Design Patterns and Best Practices. - Second Edition

Book Image

React Design Patterns and Best Practices. - Second Edition

Overview of this book

React is an adaptable JavaScript library for building complex UIs from small, detached bits called components. This book is designed to take you through the most valuable design patterns in React, helping you learn how to apply design patterns and best practices in real-life situations. You’ll get started by understanding the internals of React, in addition to covering Babel 7 and Create React App 2.0, which will help you write clean and maintainable code. To build on your skills, you will focus on concepts such as class components, stateless components, and pure components. You'll learn about new React features, such as the context API and React Hooks that will enable you to build components, which will be reusable across your applications. The book will then provide insights into the techniques of styling React components and optimizing them to make applications faster and more responsive. In the concluding chapters, you’ll discover ways to write tests more effectively and learn how to contribute to React and its ecosystem. By the end of this book, you will be equipped with the skills you need to tackle any developmental setbacks when working with React. You’ll be able to make your applications more flexible, efficient, and easy to maintain, thereby giving your workflow a boost when it comes to speed, without reducing quality.
Table of Contents (19 chapters)
Free Chapter
1
Section 1: Hello React!
4
Section 2: How React works
9
Section 3: Performance, Improvements and Production!

Common solutions

We have seen how using PureComponent can help us to tell React whether a subtree has to be rendered or not. If utilized in the right way, it could improve the performance of our applications a lot. It is also important to stress that it should be used only after the application has been monitored and the bottleneck has been found.

There are some tricky situations where extending PureComponent does not give the expected results; usually, the cause is that our props or state attributes are changing even if we think they are not. Sometimes it is not easy to figure out which props are causing the component to re-render or we do not know which components can be optimized with PureComponent.

Most of the time, refactoring the components and putting the state in the right place can greatly assist the optimization of the application.

In this section, we will look at some...