Book Image

React Key Concepts

By : Maximilian Schwarzmüller
Book Image

React Key Concepts

By: Maximilian Schwarzmüller

Overview of this book

As the most popular JavaScript library for building modern, interactive user interfaces, React is an in-demand framework that’ll bring real value to your career or next project. But like any technology, learning React can be tricky, and finding the right teacher can make things a whole lot easier. Maximilian Schwarzmüller is a bestselling instructor who has helped over two million students worldwide learn how to code, and his latest React video course (React — The Complete Guide) has over six hundred thousand students on Udemy. Max has written this quick-start reference to help you get to grips with the world of React programming. Simple explanations, relevant examples, and a clear, concise approach make this fast-paced guide the ideal resource for busy developers. This book distills the core concepts of React and draws together its key features with neat summaries, thus perfectly complementing other in-depth teaching resources. So, whether you've just finished Max’s React video course and are looking for a handy reference tool, or you've been using a variety of other learning materials and now need a single study guide to bring everything together, this is the ideal companion to support you through your next React projects. Plus, it's fully up to date for React 18, so you can be sure you’re ready to go with the latest version.
Table of Contents (16 chapters)

Introduction

State is one of the core concepts you must understand (and work with) to use React effectively. Basically, every React app utilizes (many) state values across many components to present a dynamic, reactive user interface.

From simple state values that contain a changing counter or values entered by users, all the way up to more complex state values such as the combination of multiple form inputs or user authentication information, state is everywhere. And in React apps, it's typically managed with the help of the useState() Hook.

However, once you start building more complex React applications (e.g., online shops, admin dashboards, and similar sites), it is likely that you'll face various challenges related to state. State values might be used in component A but changed in component B or be made up of multiple dynamic values that may change for a broad variety of reasons (e.g., a cart in an online shop, which is a combination of products, where every product...