Book Image

Angular 2 Components

By : Thierry Templier Thierry
Book Image

Angular 2 Components

By: Thierry Templier Thierry

Overview of this book

This book is a concise guide to Angular 2 Components and is based on the stable version of Angular 2. You will start with learning about the Angular 2 Components architecture and how components differ from Angular directives in Angular 1. You will then move on to quickly set up an Angular 2 development environment and grasp the basics of TypeScript. With this strong foundation in place, you will start building components. The book will teach you, with an example, how to define component behavior, create component templates, and use the controller of your component. You will also learn how to make your components communicate with each other. Once you have built a component, you will learn how to extend it by integrating third-party components with it. By the end of the book, you will be confident with building and using components for your applications.
Table of Contents (16 chapters)
Angular 2 Components
About the Authors
About the Reviewers

Core directives

If you are familiar with Angular 1.x, you already know what a directive is. If not, here is a quick definition: a directive is a custom attribute that adds functionality to an element. In Angular, a component is considered to be a special case of a directive which contains a template.

Angular 2 core includes several directives—NgClass, NgFor, NgIf, NgStyle, NgSwitch, NgSwitchWhen, and NgSwitchDefault.

If you are familiar with Angular 1, you already know what these directives can do, although the syntax and the underneath implementation have been changed.

Those directives aim to help us implement common templating tasks such as DOM manipulation.

To be able to use core directives in a component, we need to import the BrowserModule module into the module where the component fits. This was automatically done by angular-cli when generating the application within the app.module.ts file:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core...