ReactJS Documentation
ReactJS Documentation
Offline Ebook PDF Version of the ReactJS v16.13.1 Documentation
About the Book
ReactJS is a Javascript library for building user interfaces. This PDF ebook is a portable offline reference guide for the community, can be printed or synced with your kindle for a better reading experience. It's based on ReactJS version v.16.13.1
This is an excellent reference format for ReactJS beginners, is not a tutorial just the official documentation for your reference.
React JS Documentation pdf download
This book is not officially endorsed by ReactJS
Check out other books from the author:
Performance Optimized React Applications
Front End Developer Interview Questions
Up to Speed with Javascript in 59 minutes
Backend Developer Interview Questions
Data Science Workflow for Beginners
---
Some of the most common questions in relation to React Js
What is React js used for?
React. js is an open-source JavaScript library that is used for building user interfaces specifically for single-page applications. It's used for handling the view layer for web and mobile apps. React also allows us to create reusable UI components.
Is React js frontend or backend?
js/React is an open-source frontend framework that is based on JavaScript, developed by Facebook, and best known for its virtual DOM feature. With React, we recommend Express. js/Express as a backend service.
Is React js a programming language?
React is a popular and widely used programming language at present since almost every web developer or a full-stack developer is using it.
What is difference between JavaScript and Reactjs?
Plain JS apps usually start with the initial UI created on the server (as HTML), whereas React apps start with a blank HTML page, and dynamically create the initial state in JavaScript. React requires you to break your UI into components, but plain JS apps can be structured in any way you see fit.
Why React is so popular?
Being simple to read and easy to use made React easy to understand and implement, allowing businesses to hit the ground running and build what they need as quickly as possible. Beyond that, React's ease of use has also helped many developers adopt the technology and make it part of their toolkit.
Can I learn React without knowing JavaScript?
Since React is a JS library, there is no way around learning JavaScript. You cannot learn React without JavaScript or without knowing JavaScript in the first place. In comparison to other frontend solutions, React makes heavily use of JavaScript.
License
About the Author
Bundles that include this book
Table of Contents
-
This Book
- Recommended Resources
- Recommended Books
-
Getting Started
- Try React
- Learn React
- Staying Informed
- Versioned Documentation
- Something Missing?
-
Add React to a Website
- Add React in One Minute
- Optional: Try React with JSX
-
Create a New React App
- You Might Not Need a Toolchain
- Recommended Toolchains
- Creating a Toolchain from Scratch
- CDN Links
- Release Channels
-
Hello World
- How to Read This Guide
- Knowledge Level Assumptions
- Let’s Get Started!
- Introducing JSX
-
Rendering Elements
- Rendering an Element into the DOM
- Updating the Rendered Element
- React Only Updates What’s Necessary
-
Components and Props
- Function and Class Components
- Rendering a Component
- Composing Components
- Extracting Components
- Props are Read-Only
-
State and Lifecycle
- Converting a Function to a Class
- Adding Local State to a Class
- Adding Lifecycle Methods to a Class
- Using State Correctly
- The Data Flows Down
-
Handling Events
- Passing Arguments to Event Handlers
- Conditional Rendering
-
Lists and Keys
- Keys
-
Forms
- Controlled Components
- The textarea Tag
- The select Tag
- The file input Tag
- Handling Multiple Inputs
- Controlled Input Null Value
- Alternatives to Controlled Components
- Fully-Fledged Solutions
-
Lifting State Up
- Adding a Second Input
- Writing Conversion Functions
- Lifting State Up
- Lessons Learned
-
Composition vs Inheritance
- Containment
- Specialization
- So What About Inheritance?
-
Thinking in React
- Start With A Mock
- Step 1: Break The UI Into A Component Hierarchy
- Step 2: Build A Static Version in React
- Step 3: Identify The Minimal (but complete) Representation Of UI State
- Step 4: Identify Where Your State Should Live
- Step 5: Add Inverse Data Flow
- And That’s It
-
Accessibility
- Why Accessibility?
- Standards and Guidelines
- Semantic HTML
- Accessible Forms
- Focus Control
- Mouse and pointer events
- More Complex Widgets
- Other Points for Consideration
- Development and Testing Tools
-
Code Splitting
- Bundling
- Code Splitting
-
import() -
React.lazy - Route-based code splitting
- Named Exports
-
Context
- When to Use Context
- Before You Use Context
- API
- Examples
- Caveats
- Legacy API
-
Error Boundaries
- Introducing Error Boundaries
- Live Demo
- Where to Place Error Boundaries
- New Behavior for Uncaught Errors
- Component Stack Traces
- How About try/catch?
- How About Event Handlers?
- Naming Changes from React 15
-
Forwarding Refs
- Forwarding refs to DOM components
- Note for component library maintainers
- Forwarding refs in higher-order components
- Displaying a custom name in DevTools
-
Fragments
- Motivation
- Usage
-
Higher Order Components
- Use HOCs For Cross-Cutting Concerns
- Don’t Mutate the Original Component. Use Composition.
- Convention: Pass Unrelated Props Through to the Wrapped
- Convention: Maximizing Composability
- Convention: Wrap the Display Name for Easy Debugging
- Caveats
-
Integrating with Other Libraries
- Integrating with DOM Manipulation Plugins
- Integrating with Other View Libraries
- Integrating with Model Layers
-
JSX In Depth
- Specifying The React Element Type
- Props in JSX
- Children in JSX
-
Optimizing Performance
- Use the Production Build
- Profiling Components with the Chrome Performance Tab
- Profiling Components with the DevTools Profiler
- Virtualize Long Lists
- Avoid Reconciliation
- shouldComponentUpdate In Action
- Examples
- The Power Of Not Mutating Data
-
Portals
- Usage
- Event Bubbling Through Portals
-
Profiler API
- Usage
-
onRenderCallback
-
React Without ES6
- Declaring Default Props
- Setting the Initial State
- Autobinding
- Mixins
- React Without JSX
-
Reconciliation
- Motivation
- The Diffing Algorithm
- Tradeoffs
- Refs and the DOM
-
Render Props
- Use Render Props for Cross-Cutting Concerns
-
Using Props Other Than
render - Caveats
-
Static Type Checking
- Flow
- TypeScript
- Reason
- Kotlin
- Other Languages
- Strict Mode
- Typechecking With PropTypes
-
Uncontrolled Components
- The file input Tag
-
Web Components
- Using Web Components in React
- Using React in your Web Components
-
React Top-Level API
- Overview
- Reference
-
React Component
- Overview
- Reference
- Other APIs
- Class Properties
- Instance Properties
-
ReactDOM
- Overview
- Reference
-
ReactDOMServer
- Overview
- Reference
-
DOM Elements
- Differences In Attributes
- All Supported HTML Attributes
-
SyntheticEvent
- Overview
- Supported Events
- Reference
-
Test Utilities
- Overview
- Reference
- Other Utilities
-
Test Renderer
- Overview
- Reference
- Ideas
- JavaScript Environment Requirements
-
Glossary of React Terms
- Single-page Application
- ES6, ES2015, ES2016, etc
- Compilers
- Bundlers
- Package Managers
- CDN
- JSX
- Elements
- Components
- Lifecycle Methods
- Keys
- Refs
- Events
- Reconciliation
-
Introducing Hooks
- Video Introduction
- No Breaking Changes
- Motivation
- Gradual Adoption Strategy
- Frequently Asked Questions
- Next Steps
-
Hooks at a Glance
- State Hook
- Effect Hook
- Rules of Hooks
- Building Your Own Hooks
- Other Hooks
- Next Steps
-
Using the State Hook
- Equivalent Class Example
- Hooks and Function Components
- What’s a Hook?
- Declaring a State Variable
- Reading State
- Updating State
- Recap
- Next Steps
-
Using the Effect Hook
- Effects Without Cleanup
- Effects with Cleanup
- Recap
- Tips for Using Effects
- Next Steps
-
Rules of Hooks
- ESLint Plugin
- Explanation
- Next Steps
-
Building Your Own Hooks
- Extracting a Custom Hook
- Using a Custom Hook
-
useYourImagination()
-
Hooks API Reference
- Basic Hooks
- Additional Hooks
-
Hooks FAQ
- Adoption Strategy
- From Classes to Hooks
- Performance Optimizations
- Under the Hood
- Testing Overview
- Testing Recipes
- Testing Environments
-
Introducing Concurrent Mode (Experimental)
- What Is Concurrent Mode?
- Blocking vs Interruptible Rendering
- Putting Research into Production
- Next Steps
-
Suspense for Data Fetching (Experimental)
- What Is Suspense, Exactly?
- Using Suspense in Practice
- Traditional Approaches vs Suspense
- Start Fetching Early
- Suspense and Race Conditions
- Handling Errors
- Next Steps
-
Concurrent UI Patterns (Experimental)
- Transitions
- The Three Steps
- Other Patterns
- Next Steps
-
Adopting Concurrent Mode (Experimental)
- Installation
- What to Expect
-
Concurrent Mode API Reference (Experimental)
- Enabling Concurrent Mode
- Suspense API
- AJAX and APIs
- Babel, JSX, and Build Steps
- Passing Functions to Components
- Component State
- Styling and CSS
- File Structure
- Versioning Policy
- Virtual DOM and Internals
Causes Supported
Free Software Foundation
http://www.fsf.orgThe Free Software Foundation (FSF) is a nonprofit with a worldwide mission to promote computer user freedom. We defend the rights of all software users.
The Leanpub 45-day 100% Happiness Guarantee
Within 45 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms
Do Well. Do Good.
Authors have earned$10,901,033writing, publishing and selling on Leanpub, earning 80% royalties while saving up to 25 million pounds of CO2 and up to 46,000 trees.
Learn more about writing on Leanpub
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
Top Books
- #1
Functional event-driven architecture: Powered by Scala 3
Gabriel VolpeExplore the event-driven architecture (EDA) in a purely functional way, mainly powered by Fs2 streams in Scala 3!
Leverage your functional programming skills by designing and writing stateless microservices that scale, powered by stateful message brokers.
- #2
Practical FP in Scala: A hands-on approach
Gabriel VolpeA practical book aimed for those familiar with functional programming in Scala who are yet not confident about architecting an application from scratch.
Together, we will develop a purely functional application using the best libraries in the Cats ecosystem, while learning about design patterns and best practices.
- #3
入門 日本語自然言語処理
Masato Hagiwara and Paul O'Leary McCann日本語テキストを処理したい全てのプログラマ・エンジニアの方へ。分かち書きなどの基本から、自然言語生成などの最新の話題までをカバー。動かして学べるコードや、参照文献も付いています。言語学や機械学習の知識が無くても問題ありません。
- #4
Ansible for DevOps
Jeff GeerlingAnsible is a simple, but powerful, server and configuration management tool. Learn to use Ansible effectively, whether you manage one server—or thousands.
- #5
Book of Monads
Alejandro Serrano MenaIn functional programming, at the heart of input/output, failure, state, logic, and much more, lies a powerful abstraction called monad. This book provides a journey from the very first concepts, to the myriad of monads available to programmers, down to the categorical foundations.
- #6
Functional Programming Made Easier
Charles ScalfaniA Functional Programming book from beginner to advanced without skipping a single step along the way.
In my 40 years of programming, I've felt that programming books always let me down, especially Functional Programming books. So, I wrote the book I wish I had 5 years ago.
Functional Programming will never be easy, but it can be easier.
- #7
Introducing EventStorming
Alberto BrandoliniThe deepest tutorial and explanation about EventStorming, straight from the inventor.
- #8
Visualise, document and explore your software architecture
Simon BrownA short guide to visualising, documenting and exploring your software architecture.
- #9
Cloud Strategy
Gregor Hohpe“Strategy is the difference between making a wish and making it come true.” A successful migration to the cloud can transform your organization, but it shouldn’t be driven by wishes. This book tells you how to develop a sound strategy guided by frameworks and decision models without being overly abstract nor getting lost in product details.
- #10
Introduction to Japanese Natural Language Processing
Masato Hagiwara and Paul O'Leary McCannA thorough guide for programmers working with Japanese text, covering fundamental issues like tokenization and recent research topics like generating natural language texts. Working examples are accompanied by extensive reference to allow problem solving even without a background in Japanese or Machine Learning.
Top Bundles
- #1
Software Architecture for Developers: Volumes 1 & 2 - Technical leadership and communication
2 Books
"Software Architecture for Developers" is a practical and pragmatic guide to modern, lightweight software architecture, specifically aimed at developers. You'll learn:The essence of software architecture.Why the software architecture role should include coding, coaching and collaboration.The things that you really need to think about before... - #2
CCIE Service Provider Ultimate Study Bundle
2 Books
Piotr Jablonski, Lukasz Bromirski, and Nick Russo have joined forces to deliver the only CCIE Service Provider training resource you'll ever need. This bundle contains a detailed and challenging collection of workbook labs, plus an extensively detailed technical reference guide. All of us have earned the CCIE Service Provider certification... - #3
All the Books of The Medical Futurist
6 Books
We put together the most popular books from The Medical Futurist to provide a clear picture about the major trends shaping the future of medicine and healthcare. Digital health technologies, artificial intelligence, the future of 20 medical specialties, big pharma, data privacy, digital health investments and how technology giants such as Amazon... - #6
Abandon Your Job - Leaving the Rat Race with Python
8 Books
Now, get all the great Python and Freelancing books from finxter.com in one single bundle!Coffee Break Python - All Python BasicsCoffee Break Python Workbook - Practice the basics of PythonCoffee Break Python Mastery Workouts - Practice advanced Python conceptsCoffee Break Python Slicing - All about SlicingCoffee Break Python NumPy - Get started... - #7
10 Books Bundle - A New Career in Tech 🚀
10 Books
Do you want to create yourself a new and profitable skillset - in one year or less? Do you want to position yourself on the right side of change finally? Do you want to work from home and set your own work schedule while choosing fun and interesting coding projects? Software developers and freelance developersearn six figuresin the US, according... - #8
The Python Craftsman
3 Books
The Python Craftsman series comprises The Python Apprentice, The Python Journeyman, and The Python Master. The first book is primarily suitable for for programmers with some experience of programming in another language. If you don't have any experience with programming this book may be a bit daunting. You'll be learning not just a programming... - #10
Pattern-Oriented Memory Forensics and Malware Detection
2 Books
This training bundle for security engineers and researchers, malware and memory forensics analysts includes two accelerated training courses for Windows memory dump analysis using WinDbg. It is also useful for technical support and escalation engineers who analyze memory dumps from complex software environments and need to check for possible...
