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

The shadow DOM

When we are creating a component in Angular 2, a shadow DOM is created and our template gets loaded into it (not by default). What is a shadow DOM? Shadow DOM refers to a subtree of DOM elements that renders as part of the document, but not into the main document DOM tree.

Let's see a well-known example of a shadow DOM, an HTML select, in action. Create a plain HTML file in your favorite text editor and create a select element in its body:

<!doctype html>
<html lang="en">
    <meta charset="UTF-8">

Next, open it up in Chrome and right-click on the element, then choose Inspect Element from the pop-up menu:

The Chrome DevTool will pop up, and we can inspect the select element in the Elements...