Book Image

Learn React with TypeScript 3

By : Carl Rippon
Book Image

Learn React with TypeScript 3

By: Carl Rippon

Overview of this book

React today is one of the most preferred choices for frontend development. Using React with TypeScript enhances development experience and offers a powerful combination to develop high performing web apps. In this book, you’ll learn how to create well structured and reusable react components that are easy to read and maintain by leveraging modern web development techniques. We will start with learning core TypeScript programming concepts before moving on to building reusable React components. You'll learn how to ensure all your components are type-safe by leveraging TypeScript's capabilities, including the latest on Project references, Tuples in rest parameters, and much more. You'll then be introduced to core features of React such as React Router, managing state with Redux and applying logic in lifecycle methods. Further on, you'll discover the latest features of React such as hooks and suspense which will enable you to create powerful function-based components. You'll get to grips with GraphQL web API using Apollo client to make your app more interactive. Finally, you'll learn how to write robust unit tests for React components using Jest. By the end of the book, you'll be well versed with all you need to develop fully featured web apps with React and TypeScript.
Table of Contents (14 chapters)

Handling class component events

Events exist in many programming languages. They allow us to specify logic to be executed, depending on how a user interacts with our app.

Basic event handlers

All the native JavaScript events are available for us to handle in JSX. JSX allows us to do this with props that call functions. The prop name is derived by prefixing the native event name with on, using camel case. So the prop name for the click event is onClick in JSX.

We can see a list of all the available events with their corresponding types in the index.d.ts file in the node_modules/@types/react folder.

We need to be able to control what the buttons do in our Confirm component. Follow these steps:

  1. The first step is handling the...