Book Image

The React Workshop

By : Brandon Richey, Ryan Yu, Endre Vegh, Theofanis Despoudis, Anton Punith, Florian Sloot
5 (1)
Book Image

The React Workshop

5 (1)
By: Brandon Richey, Ryan Yu, Endre Vegh, Theofanis Despoudis, Anton Punith, Florian Sloot

Overview of this book

Are you interested in how React takes command of the view layer for web and mobile apps and changes the data of large web applications without needing to reload the page? This workshop will help you learn how and show you how to develop and enhance web apps using the features of the React framework with interesting examples and exercises. The workshop starts by demonstrating how to create your first React project. You’ll tap into React’s popular feature JSX to develop templates and use DOM events to make your project interactive. Next, you’ll focus on the lifecycle of the React component and understand how components are created, mounted, unmounted, and destroyed. Later, you’ll create and customize components to understand the data flow in React and how props and state communicate between components. You’ll also use Formik to create forms in React to explore the concept of controlled and uncontrolled components and even play with React Router to navigate between React components. The chapters that follow will help you build an interesting image-search app to fetch data from the outside world and populate the data to the React app. Finally, you’ll understand what ref API is and how it is used to manipulate DOM in an imperative way. By the end of this React book, you’ll have the skills you need to set up and create web apps using React.
Table of Contents (20 chapters)
Preface

Forwarding Refs

In this section, we are going to discuss the methodologies used in order to implement Forwarding Refs. These are as follows:

Composition

One of the key concepts of React is the composition of components. That means we want to be able to encapsulate logic without creating dependencies between components.

Let's look at the following code snippet, in which the SayHello component adds a button that says hello to literally any child component that you pass to it. This way, the child component only needs to know about what it is supposed to know, in the same way the SayHello component only cares about the logic and the UI responsible for saying hello:

import React from "react";
const SayHello = props => {
  return (
  <div>
    { props.children }
    <button onClick={() => console.log("Hello!")}>
      Say Hello!
  ...