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)


In this chapter, we discussed controlled components, which are React's recommended method for handling form data entry. With controlled components, we let React control input values via component state.

We looked at building generic Form and Field components containing state and change handlers, so that we don't need to implement individual state and change handlers for every field in every form in our apps.

We then created some standard validation functions, and added the ability to add validation rules within the generic Form component and render validation errors automatically in the Field component.

Finally, we added the ability to handle form submission when consuming the generic Form component. Our Contact Us page was changed to use the generic Form and Field components.

Our generic components only deal with very simple forms. Not surprisingly, there are...