Book Image

React Design Patterns and Best Practices

By : Michele Bertoli
Book Image

React Design Patterns and Best Practices

By: Michele Bertoli

Overview of this book

Taking a complete journey through the most valuable design patterns in React, this book demonstrates how to apply design patterns and best practices in real-life situations, whether that’s for new or already existing projects. It will help you to make your applications more flexible, perform better, and easier to maintain – giving your workflow a huge boost when it comes to speed without reducing quality. We’ll begin by understanding the internals of React before gradually moving on to writing clean and maintainable code. We’ll build components that are reusable across the application, structure applications, and create forms that actually work. Then we’ll style React components and optimize them to make applications faster and more responsive. Finally, we’ll write tests effectively and you’ll learn how to contribute to React and its ecosystem. By the end of the book, you’ll be saved from a lot of trial and error and developmental headaches, and you will be on the road to becoming a React expert.
Table of Contents (19 chapters)
React Design Patterns and Best Practices
About the Author
About the Reviewer
Customer Feedback

Higher-order Components

In the previous section, we saw how mixins are useful for sharing functionalities between components and the problems that they bring to our applications.

In the Functional Programming section of Chapter 2Clean Up Your Code, we mentioned the concept of Higher-order Functions (HoFs), which are functions that, given a function, enhance it with some extra behaviors, returning a new one.

Let's see if we can apply the same concept to React components and achieve our goal to sharing functionalities between components while avoiding the downsides of mixins.

When we apply the idea of HoFs to components, we call it Higher-order Components (HoCs) for brevity.

First of all, let's see what a HoC looks like:

const HoC = Component => EnhancedComponent 

HoCs are functions that take a component as input and return an enhanced one as the output.

Let's start with a very simple example to understand what an enhanced component looks like.

Suppose you need to attach to every component...