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)

Route parameters

A Route parameter is a variable part of the path that can used in the destination component to conditionally render something.

We need to add another page to our shop to show the description and price of each product, along with an option to add it to the basket. We want to be able to navigate to this page using the "/products/{id}" path, where id is the ID of the product. For example, the path to React Redux would be "products/2". So, the id part of the path is a route parameter. We can do all this by following these steps:

  1. Let's add this route to Routes.tsx in between the two existing routes. The id part of the route is going to be a route parameter, which we define with a colon in front of it:
<Route path="/products" component={ProductsPage} />
<Route path="/products/:id" component={ProductPage} />