Preface
[ 2 ]
Chapter 6, Component Composition with TypeScript, discusses how Angular is component-
based. It explains that components are composed together as building blocks to make a
fully functional app. We will discuss modularizing components using composition with
examples and component interaction (data transfer and events). In doing so, we will see
how TypeScript is used to keep us in check with all these moving parts.
Chapter 7, Separating Concerns with Typed Services, discusses how it’s bad practice to allow
our logic to live in our components. In such a case, Angular allows you to provide API
methods via services that these components can consume. We will discuss how TypeScript
helps us create contracts (using types) between these API methods and the components.
Chapter 8, Better Forms and Event Handling with TypeScript, explains how the Angular form
module enables us to write predictable typed forms with TypeScript, which is a perfect
means of collecting data from our app users. We will also see how to use typed DOM
events (for example, click, mouseover, and keydown) to respond to user interactions.
Chapter 9, Writing Modules, Directives, and Pipes with TypeScript, discusses the secondary
building blocks of Angular and how they are best used with TypeScript. You will learn how
to build custom directives and pipes in Angular with types and decorators.
Chapter 10, Client-Side Routing for SPA, explains Single Page Applications (SPAs), which
are built by handing over routing to the client with JavaScript rather than the server. We
will discuss how, with Angular and TypeScript, we can use the router module to build
multiple view apps with just a single server route.
Chapter 11, Working with Real Hosted Data, takes a deep dive into consuming API data with
Angular’s HTTP module. You will learn how to make an HTTP request right from our
Angular app. Data fetched from this request can then be rendered by components.
Chapter 12, Testing and Debugging, covers recommended practices on unit testing Angular
building blocks. These include components, services, routes, and more.
What you need for this book
The examples covered in this book can be implemented on a Windows, Linux, or macOS
PC. You'll need to install Node and npm to work with TypeScript, and a decent web
browser.
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