Book Image

Learning Angular for .NET Developers

By : Rajesh Gunasundaram
Book Image

Learning Angular for .NET Developers

By: Rajesh Gunasundaram

Overview of this book

Are you are looking for a better, more efficient, and more powerful way of building front-end web applications? Well, look no further, you have come to the right place! This book comprehensively integrates Angular version 4 into your tool belt, then runs you through all the new options you now have on hand for your web apps without bogging you down. The frameworks, tools, and libraries mentioned here will make your work productive and minimize the friction usually associated with building server-side web applications. Starting off with building blocks of Angular version 4, we gradually move into integrating TypeScript and ES6. You will get confident in building single page applications and using Angular for prototyping components. You will then move on to building web services and full-stack web application using ASP.NET WebAPI. Finally, you will learn the development process focused on rapid delivery and testability for all application layers.
Table of Contents (16 chapters)
Title Page
About the Author
About the Reviewers
Customer Feedback


Pipes in Angular are a replacement of filters in AngularJS 1.x. Pipes are an improved version of filters that transform common data. Most of the applications fetch data from a server and transform it before displaying the data on the frontend. In such cases, pipes are very useful in transforming the data on rendering the template. Angular provides these cool API pipes for this purpose. Pipes take data as input and output transformed data as needed.

Common pipes

The following are the built-in pipes available in @angular/core, and we will see a few pipes with examples:

  • AsyncPipe
  • CurrencyPipe
  • DatePipe
  • DecimalPipe
  • I18nPluralPipe
  • I18nSelectPipe
  • JsonPipe
  • LowerCasePipe
  • PercentPipe
  • SlicePipe
  • TitleCasePipe
  • UpperCasePipe

Pipe with parameters

We can pass parameters to a pipe followed by a colon (:) symbol, as follows:

<p>Price of the book is {{ price | currency:'USD' }} </p>

Multiple inputs to a pipe can be added by separating the values by (:), as shown:

<li *ngFor="let book of books | slice:1:3...