React Hooks in action : with suspense and concurrent mode / John Larsen.

Format:

Book

Author/Creator:

Larsen, John R., author.

Language:

English

Subjects (All):

JavaScript (Computer program language).

Web-based user interfaces--Design and construction.

Web-based user interfaces.

Application software--Development.

Application software.

Web site development.

Physical Description:

1 online resource (279 pages)

Place of Publication:

Shelter Island, New York : Manning, [2021]

Summary:

Get started with React Hooks and you'll soon have code that's better organized and easier to maintain. React Hooks are targeted JavaScript functions that let you reuse and share functionality across components. Use them to split components into smaller functions, manage state and side effects, and access React features without classes-- all without having to rearrange your component hierarchy. React Hooks in action teaches you to write fast and reusable React components using Hooks. You'll start by learning to create component code with Hooks. Next, you'll implement a resource booking application that demonstrates managing local state, application state, and side effects like fetching data. Code sample and illustrations make learning Hooks easy.

Contents:

Intro

React Hooks in Action

Copyright

dedication

contents

front matter

preface

acknowledgments

about this book

Who should read this book

How this book is organized: A roadmap

About the code

liveBook discussion forum

Other online resources

about the author

about the cover illustration

Part 1

1 React is evolving

1.1 What is React?

1.1.1 Building a UI from components

1.1.2 Synchronizing state and UI

1.1.3 Understanding component types

1.2 What's new in React?

1.3 React Hooks can add state to function components

1.3.1 Stateful function components: Less code, better organization

1.3.2 Custom hooks: Easier code reuse

1.3.3 Third-party hooks provide ready-made, well-tested functionality

1.4 Better UX with Concurrent Mode and Suspense

1.4.1 Concurrent Mode

1.4.2 Suspense

1.5 React's new publication channels

1.6 Whom is this book for?

1.7 Getting started

Summary

2 Managing component state with the useState hook

2.1 Setting up the bookings manager app

2.1.1 Generating the app skeleton with create-react-app

2.1.2 Editing the four key files

2.1.3 Adding a database file for the application

2.1.4 Creating page components and a UserPicker.js file

2.2 Storing, using, and setting values with useState

2.2.1 Assigning new values to variables doesn't update the UI

2.2.2 Calling useState returns a value and an updater function

2.2.3 Calling the updater function replaces the previous state value

2.2.4 Passing a function to useState as the initial value

2.2.5 Using the previous state when setting the new state

2.3 Calling useState multiple times to work with multiple values

2.3.1 Using a drop-down list to set state

2.3.2 Using a check box to set state

2.4 Reviewing some function component concepts

Summary.

3 Managing component state with the useReducer hook

3.1 Updating multiple state values in response to a single event

3.1.1 Taking users out of the movie with unpredictable state changes

3.1.2 Keeping users in the movie with predictable state changes

3.2 Managing more complicated state with useReducer

3.2.1 Updating state using a reducer with a predefined set of actions

3.2.2 Building a reducer for the BookablesList component

3.2.3 Accessing component state and dispatching actions with useReducer

3.3 Generating the initial state with a function

3.3.1 Introducing the WeekPicker component

3.3.2 Creating utility functions to work with dates and weeks

3.3.3 Building the reducer to manage dates for the component

3.3.4 Passing an initialization function to the useReducer hook

3.3.5 Updating BookingsPage to use WeekPicker

3.4 Reviewing some useReducer concepts

4 Working with side effects

4.1 Exploring the useEffect API with simple examples

4.1.1 Running side effects after every render

4.1.2 Running an effect only when a component mounts

4.1.3 Cleaning up side effects by returning a function

4.1.4 Controlling when an effect runs by specifying dependencies

4.1.5 Summarizing the ways to call the useEffect hook

4.1.6 Calling useLayoutEffect to run an effect before the browser repaints

4.2 Fetching data

4.2.1 Creating the new db.json file

4.2.2 Setting up a JSON server

4.2.3 Fetching data within a useEffect hook

4.2.4 Working with async and await

4.3 Fetching data for the BookablesList component

4.3.1 Examining the data-loading process

4.3.2 Updating the reducer to manage loading and error states

4.3.3 Creating a helper function to load data

4.3.4 Loading the bookables

5 Managing component state with the useRef hook.

5.1 Updating state without causing a re-render

5.1.1 Comparing useState and useRef when updating state values

5.1.2 Calling useRef

5.2 Storing timer IDs with a ref

5.3 Keeping references to DOM elements

5.3.1 Setting focus on an element in response to an event

5.3.2 Managing a text box via a ref

6 Managing application state

6.1 Passing shared state to child components

6.1.1 Passing state from a parent by setting props on the children

6.1.2 Receiving state from a parent as a prop

6.1.3 Receiving an updater function from a parent as a prop

6.2 Breaking components into smaller pieces

6.2.1 Seeing components as part of a bigger app

6.2.2 Organizing multiple components within a page's UI

6.2.3 Creating a BookableDetails component

6.3 Sharing the state and dispatch function from useReducer

6.3.1 Managing state in the BookablesView component

6.3.2 Removing an action from the reducer

6.3.3 Receiving state and dispatch in the BookablesList component

6.4 Sharing the state value and updater function from useState

6.4.1 Managing the selected bookable in the BookablesView component

6.4.2 Receiving the bookable and updater function in BookablesList

6.5 Passing functions to useCallback to avoid redefining them

6.5.1 Depending on functions we pass in as props

6.5.2 Maintaining function identity with the useCallback hook

7 Managing performance with useMemo

7.1 Breaking the cook's heart by calling, "O, shortcake!"

7.1.1 Generating anagrams with an expensive algorithm

7.1.2 Avoiding redundant function calls

7.2 Memoizing expensive function calls with useMemo

7.3 Organizing the components on the Bookings page

7.3.1 Managing the selected bookable with useState

7.3.2 Managing the selected week and booking with useReducer and useState.

7.4 Efficiently building the bookings grid with useMemo

7.4.1 Generating a grid of sessions and dates

7.4.2 Generating a lookup for bookings

7.4.3 Providing a getBookings data-loading function

7.4.4 Creating the BookingsGrid component and calling useMemo

7.4.5 Coping with racing responses when fetching data in useEffect

8 Managing state with the Context API

8.1 Needing state from higher up the component tree

8.1.1 Displaying a call-to-action message when the page first loads

8.1.2 Displaying booking information when a visitor selects a booking

8.1.3 Displaying an edit button for a user's bookings: The problem

8.1.4 Displaying an edit button for a user's bookings: The solution

8.2 Working with custom providers and multiple contexts

8.2.1 Setting an object as the context provider's value

8.2.2 Moving the state to a custom provider

8.2.3 Working with multiple contexts

8.2.4 Specifying a default value for a context

9 Creating your own hooks

9.1 Extracting functionality into custom hooks

9.1.1 Recognizing functionality that could be shared

9.1.2 Defining custom hooks outside your components

9.1.3 Calling custom hooks from custom hooks

9.2 Following the Rules of Hooks

9.2.1 Call hooks only at the top level

9.2.2 Call hooks only from React functions

9.2.3 Using an ESLint plugin for the rules of hooks

9.3 Extracting further examples of custom hooks

9.3.1 Accessing window dimensions with a useWindowSize hook

9.3.2 Getting and setting values with a useLocalStorage hook

9.4 Consuming a context value with a custom hook

9.5 Encapsulating data fetching with a custom hook

9.5.1 Creating the useFetch hook

9.5.2 Using the data, status, and error values the useFetch hook returns

9.5.3 Creating a more specialized data-fetching hook: useBookings.

Summary

10 Using third-party hooks

10.1 Accessing state in the URL with React Router

10.1.1 Setting up routes to enable nesting

10.1.2 Adding nested routes to the Bookables page

10.1.3 Accessing URL parameters with the useParams hook

10.1.4 Navigating with the useNavigate hook

10.2 Getting and setting query string search parameters

10.2.1 Getting search parameters from the query string

10.2.2 Setting the query string

10.3 Streamlining data-fetching with React Query

10.3.1 Introducing React Query

10.3.2 Giving components access to a React Query client

10.3.3 Fetching data with useQuery

10.3.4 Accessing data in the query cache

10.3.5 Updating server state with useMutation

Part 2

11 Code splitting with Suspense

11.1 Importing code dynamically with the import function

11.1.1 Setting up a web page to load JavaScript when a button is clicked

11.1.2 Using default and named exports

11.1.3 Using static imports to load JavaScript

11.1.4 Calling the import function to dynamically load JavaScript

11.2 Importing components dynamically with lazy and Suspense

11.2.1 Converting a component to a lazy component with the lazy function

11.2.2 Specifying fallback content with the Suspense component

11.2.3 Understanding how lazy and Suspense work together

11.2.4 Code splitting an app on its routes

11.3 Catching errors with error boundaries

11.3.1 Checking out the error boundary example in the React docs

11.3.2 Creating our own error boundary

11.3.3 Recovering from errors

12 Integrating data fetching with Suspense

12.1 Data fetching with Suspense

12.1.1 Upgrading promises to include their status

12.1.2 Using the promise status to integrate with Suspense

12.1.3 Fetching data as early as possible

12.1.4 Fetching new data.

12.1.5 Recovering from errors.

Notes:

Description based on print version record.

Includes index.

ISBN:

9781638350767

1638350760

9781617297632

1617297631

OCLC:

1256802826