Book Image

Full-Stack React, TypeScript, and Node

By : David Choi
2 (1)
Book Image

Full-Stack React, TypeScript, and Node

2 (1)
By: David Choi

Overview of this book

React sets the standard for building high-performance client-side web apps. Node.js is a scalable application server that is used in thousands of websites, while GraphQL is becoming the standard way for large websites to provide data and services to their users. Together, these technologies, when reinforced with the capabilities of TypeScript, provide a cutting-edge stack for complete web application development. This book takes a hands-on approach to implementing modern web technologies and the associated methodologies for building full-stack apps. You’ll begin by gaining a strong understanding of TypeScript and how to use it to build high-quality web apps. The chapters that follow delve into client-side development with React using the new Hooks API and Redux. Next, you’ll get to grips with server-side development with Express, including authentication with Redis-based sessions and accessing databases with TypeORM. The book will then show you how to use Apollo GraphQL to build web services for your full-stack app. Later, you’ll learn how to build GraphQL schemas and integrate them with React using Hooks. Finally, you’ll focus on how to deploy your application onto an NGINX server using the AWS cloud. By the end of this book, you’ll be able to build and deploy complete high-performance web applications using React, Node, and GraphQL.
Table of Contents (22 chapters)
Section 1:Understanding TypeScript and How It Can Improve Your JavaScript
Section 2: Learning Single-Page Application Development Using React
Section 3: Understanding Web Service Development Using Express and GraphQL
Chapter 16: Adding a GraphQL Schema – Part II

Changing the this context

We already discussed the this context object in the previous section. As mentioned, in JavaScript, functions have access to an internal object called this that represents the caller of the function. Now, the confusing part of using this is that the value of this can change depending on how the function is called. So, JavaScript provides helpers that allow you to reset the this object of a function to the one you want, instead of the one given to you. There are several methods, including apply and call, but the most important one for us to learn is the bind keyword. This is important for us to know because bind is used often in React class-based components. It's a bit early to show a full-blown React example. So, let's start with something a little easier. Create a new file called bind.ts and add the following code to it:

class A {
    name: string = 'A';
    go() {