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

Data bindings

To fully understand the component code that was generated for us by angular-cli, we need to talk about data bindings. In other words, the way that we were able to render the title declared on the component class to component template.

First, let's take a look at the entire component code:

import { Component, ViewEncapsulation } from '@angular/core';

  selector: 'app-root',
  encapsulation: ViewEncapsulation.None,
  template: `
  styles: [`
    h1 { color: darkblue }
export class AppComponent {
  title = 'app works!';

It's not hard to spot the double curly braces in the template. This is a part of Angular's template syntax, which is responsible for one way binding of data from the component class. In this case, we are binding the title property (which is a string) to be rendered between the <h1> tag.

Later in this book, we will explore some more binding options.