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React

Learning

FUNCTIONAL WEB DEVELOPMENT WITH REACT AND REDUX

Alex Banks & Eve Porcello

Learning React

If you want to learn how to build efficient user interfaces with React, this is

your book. Authors Alex Banks and Eve Porcello show you how to create

UIs with this small JavaScript library that can deftly display data changes

on large-scale, data-driven websites without page reloads. Along the

way, you’ll learn how to work with functional programming and the latest

ECMAScript features.

Developed by Facebook, and used by companies including Netflix,

Walmart, and

The New York Times

for large parts of their web interfaces,

React is quickly growing in use. By learning how to build React components

with this hands-on guide, you’ll fully understand how useful React can be

in your organization.

■

Learning React takes the

“

functional programming

ideas behind React and

makes them accessible,

and immediately useful

for anyone who wants to

build modern JavaScript

applications. It's a great

guide to the common

challenges and solutions

associated with React

applications.

Software Engineer, Twitter and

author of

Learning React Native

Learn key functional programming concepts with JavaScript

Peek under the hood to understand how React runs in the browser

Create application presentation layers by mounting and

composing React components

Use component trees to manage data and reduce the time you

spend debugging applications

Explore React’s component lifecycle and use it to load data and

improve UI performance

Use a routing solution for browser history, bookmarks, and

other features of single-page applications

Learn how to structure React applications with servers in mind

—Bonnie Eisenman

”

■

Alex Banks

is a software engineer, instructor, and cofounder of Moon Highway,

a curriculum development company in California. He’s developed applications for

the Chicago Marathon, MSN, and the Department of Energy.

Eve Porcello

is a software architect, trainer, and cofounder of Moon Highway.

She also has taught JavaScript and Python at Stanford University, PayPal, eBay,

and Lynda.com.

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CAN $65.99

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ISBN: 978-1-491-95462-1

Functional Web Development

with React and Redux

Learning React

Alex Banks and Eve Porcello

Beijing

Boston Farnham Sebastopol

Tokyo

Learning React

by Alex Banks and Eve Porcello

Printed in the United States of America.

Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472.

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May 2017:

First Edition

Indexer:

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Interior Designer:

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Cover Designer:

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Illustrator:

Rebecca Demarest

Revision History for the First Edition

2017-04-26:

2018-02-09:

First Release

Second Release

See

http://oreilly.com/catalog/errata.csp?isbn=9781491954621

for release details.

The O’Reilly logo is a registered trademark of O’Reilly Media, Inc.

Learning React,

the cover image, and

related trade dress are trademarks of O’Reilly Media, Inc.

While the publisher and the authors have used good faith efforts to ensure that the information and

instructions contained in this work are accurate, the publisher and the authors disclaim all responsibility

for errors or omissions, including without limitation responsibility for damages resulting from the use of

or reliance on this work. Use of the information and instructions contained in this work is at your own

risk. If any code samples or other technology this work contains or describes is subject to open source

licenses or the intellectual property rights of others, it is your responsibility to ensure that your use

thereof complies with such licenses and/or rights.

978-1-491-95462-1

[LSI]

Table of Contents

Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Welcome to React. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Obstacles and Roadblocks

React Is a Library

New ECMAScript Syntax

Popularity of Functional JavaScript

JavaScript Tooling Fatigue

Why React Doesn’t Have to Be Hard to Learn

React’s Future

Keeping Up with the Changes

Working with the Files

File Repository

React Developer Tools

Installing Node.js

Declaring Variables in ES6

const

let

Template Strings

Default Parameters

Arrow Functions

Transpiling ES6

ES6 Objects and Arrays

Destructuring Assignment

Object Literal Enhancement

The Spread Operator

Emerging JavaScript. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

iii

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