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From the brand
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Sharing the knowledge of experts
O'Reilly's mission is to change the world by sharing the knowledge of innovators. For over 40 years, we've inspired companies and individuals to do new things (and do them better) by providing the skills and understanding that are necessary for success.
Our customers are hungry to build the innovations that propel the world forward. And we help them do just that.
From the Publisher
From the Preface
This book is for developers who want to learn the React library while learning the latest techniques currently emerging in the JavaScript language. This is an exciting time to be a JavaScript developer. The ecosystem is exploding with new tools, syntax, and best practices that promise to solve many of our development problems. Our aim with this book is to organize these techniques so you can get to work with React right away. We’ll get into state management, React Router, testing, and server rendering, so we promise not to introduce only the basics and then throw you to the wolves.
This book does not assume any knowledge of React at all. We’ll introduce all of React’s basics from scratch. Similarly, we won’t assume that you’ve worked with the latest JavaScript syntax. This will be introduced in Chapter 2 as a foundation for the rest of the chapters.
You’ll be better prepared for the contents of the book if you’re comfortable with HTML, CSS, and JavaScript. It’s almost always best to be comfortable with these big three before diving into a JavaScript library.
Along the way, check out the GitHub repository. All of the examples are there and will allow you to practice hands-on.
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Top reviews from the United States
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Reviewed in the United States on November 24, 2021
Reviewed in the United States on August 21, 2020
Missing a not can easily confuse readers.
Images in this review
Reviewed in the United States on June 5, 2021
Reviewed in the United States on September 13, 2020
The first half of this book is a great read. I thought it balanced introducing a primer for JavaScript and going through the history and motivation for using React pretty well. As one reviewer mentioned, it just kind of breezes through setting up and running a react app pretty quickly and never comes back to the subject.
Then, somewhere between the halfway point and the two-thirds point through the book, the examples just started turning into confusing messes. One reviewer put it best in saying that the poorly crafted examples actually have the side effect of helping you learn more as you have to try to figure out how to get the things working.
I attached two images to kind of showcase this. On one page, they start refactoring one of the example projects so that the React components that we created end up at the App component level. It says to remove a component called "RepoMenu" from another component called "UserRepositories" where it was a nested component. Then, on the very next page, the next code example snippet shows that same "RepoMenu" component still in the exact place where they just said to remove it from. And not only did they not actually remove the component after they told the reader to, they changed one of the property names on the "RepoMenu" component in the later code snippet, so if you just blindly copied what they had, you would inadvertently break your code. That's just one of many examples.
Aside from the confusing examples, the other major issue I have with this book is that once the refactoring starts, they kind of just show the refactored code in a vacuum that's void of any context. Some of the refactorings involve creating new components or functions and they'll show this new code, but on quite a few occasions they won't show where that code goes. Many times I couldn't tell if I had just created a new component that should go in its own new file or if I had just created a helper function that should just live in the same file as an existing component.
If you have some experience with programming and/or web development, you'll likely be able to work through a lot of these inconsistencies and issues with only mild annoyance, but if you're completely new to programming and/or web development, lord help you because you're gonna be in for a challenge with this book.
All in all this book does have some good information and it's one of the newest books published on React that I could find so I think it's worth looking at, but maybe not as an introduction to programming or React.
Then, somewhere between the halfway point and the two-thirds point through the book, the examples just started turning into confusing messes. One reviewer put it best in saying that the poorly crafted examples actually have the side effect of helping you learn more as you have to try to figure out how to get the things working.
I attached two images to kind of showcase this. On one page, they start refactoring one of the example projects so that the React components that we created end up at the App component level. It says to remove a component called "RepoMenu" from another component called "UserRepositories" where it was a nested component. Then, on the very next page, the next code example snippet shows that same "RepoMenu" component still in the exact place where they just said to remove it from. And not only did they not actually remove the component after they told the reader to, they changed one of the property names on the "RepoMenu" component in the later code snippet, so if you just blindly copied what they had, you would inadvertently break your code. That's just one of many examples.
Aside from the confusing examples, the other major issue I have with this book is that once the refactoring starts, they kind of just show the refactored code in a vacuum that's void of any context. Some of the refactorings involve creating new components or functions and they'll show this new code, but on quite a few occasions they won't show where that code goes. Many times I couldn't tell if I had just created a new component that should go in its own new file or if I had just created a helper function that should just live in the same file as an existing component.
If you have some experience with programming and/or web development, you'll likely be able to work through a lot of these inconsistencies and issues with only mild annoyance, but if you're completely new to programming and/or web development, lord help you because you're gonna be in for a challenge with this book.
All in all this book does have some good information and it's one of the newest books published on React that I could find so I think it's worth looking at, but maybe not as an introduction to programming or React.
Images in this review
Reviewed in the United States on January 25, 2021
Top reviews from other countries
mionavmanspecialist
Nice to have it in book form
Reviewed in the Netherlands on February 25, 2023
A. B.
Good for programmers of other languages unfamiliar with Javascript and React
Reviewed in the United Kingdom on August 9, 2021
