Book Image

Designing React Hooks the Right Way

By : Fang Jin
Book Image

Designing React Hooks the Right Way

By: Fang Jin

Overview of this book

React hook creates a unique solution for using states in function components to orchestrate UI communication. They provide you with an easy interface to write custom data management solutions with low development and maintenance costs. Understanding how Hooks are designed enables you to use them more effectively, and this book helps you to do just that. This book starts with a custom-crafted solution to reveal why Hooks are needed in the first place. You will learn about the React engine and discover how each built-in Hook can manage a persistent value by hooking into it. You will walk through the design and implementation of each hook with code so that you gain a solid understanding. Finally, you'll get to grips with each Hook's pitfalls and find out how to effectively overcome them. By the end of this React book, you'll have gained the confidence to build and write Hooks for developing functional and efficient web applications at scale.
Table of Contents (12 chapters)

What is an area update?

On a typical website, once the site is loaded, it starts listening to all user actions. Each action received gets handled on a first-come, first-served basis. Normally, the impact of each action is limited to one small region of the screen, using a UI term, a single component. However, sometimes, a user action can do more than that.

Let's use the computer as an analogy. Say you decide to change the color settings of your system. Once the color is changed, the computer goes through all the open windows and applies that color to them. Therefore, this action can impact multiple applications spread across the screen. This becomes an area update.

Have you wondered how we can make an area update when the impacted components are located very distantly from each other? To be able to answer this question, let's first recall a single update introduced in Chapter 4, Use State to Jumpstart Components.

A fiber tree is scheduled for a single update upon...