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Switching to Angular Third Edition Align with Google's long-term vision for Angular version 5 and beyond Minko Gechev BIRMINGHAM - MUMBAI Switching to Angular Third Edition Copyright © 2017 Packt Publishing All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews. Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book. Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information. First published: March 2016 Second edition: February 2017 Third edition: October 2017 Production reference: 1301017 Published by Packt Publishing Ltd. Livery Place 35 Livery Street Birmingham B3 2PB, UK. ISBN 978-1-78862-070-3 www.packtpub.com Credits Author Copy Editor Minko Gechev Tom Jacob Acquisition Editor Indexer Dominic Shakeshaft Francy Puthiry Project Editor Graphics Radhika Atitkar Kirk D'Penha Content Development Editor Production Coordinator Venugopal Commuri Arvindkumar Gupta Technical Editor Anupam Tiwari Foreword Angular is a quick and powerful solution to building Single-Page Applications, where applications are faster, more visible to SEO and mobile devices, and are cross-platform ready. Today the philosophy remains true to the original vision. Switching to Angular, Third Edition, is a book that recognizes this vision. Minko's book successfully helps you to switch your thinking to Angular. From your first interactions with Angular to the last, the core concepts of Angular are maintained throughout. This guide will help you to switch to Angular's new way of doing things. Minko guides you through the changes and new features that have been introduced—components, directives, TypeScript, the new router, and everything else you need to start using Angular for your next project. As Angular takes up the challenge set by today's changing web development landscape and builds on the legacy of AngularJS, high-quality learning materials, such as Minko's book, are incredibly important for the Angular community to help Angular developers make that switch over to the future. Miško Hevery Creator of AngularJS and Angular About the Author Minko Gechev is a Google Developer Expert for the Angular team and a presenter at over 40 worldwide conferences, including ng-conf, AngularConnect, AngularUP, and many others. Minko is co-author of the official Angular style guide, and has developed codelyzer – a tool for static analysis of Angular applications and best practices, which is part of the Angular CLI, and currently has over a million downloads each month. Minko is a former member of the Angular Mobile Team where his role involved him with tools for facilitating the process of developing Progressive web applications with Angular easier. Other projects by the author include the AngularJS style guide, which is translated to 13 different languages, aspect.js, Angular Seed, and many others. Minko Gechev is co-founder and CTO at Rhyme and strongly believes in open source software. I want to thank Miško Hevery for his great contributions to the software engineering and technical review of this book. He helped me provide as precise content as possible. To make the code samples for this book easy to run, I used Angular Seed. One of the core contributors of the project is Ludovic Hénin, who helped make it much more than an Angular starter. I also want to thank Daniel Lamb, Radoslav Kirov, and Tero Parviainen who gave me extremely valuable feedback. I couldn't have completed this book without the dedicated work of the Packt Publishing team. Finally, I want to thank the team at Google for giving us Angular. They are a constant inspiration. www.PacktPub.com For support files and downloads related to your book, please visit www.PacktPub.com. Did you know that Packt offers eBook versions of every book published, with PDF and ePub files available? You can upgrade to the eBook version at www.PacktPub.com and as a print book customer, you are entitled to a discount on the eBook copy. Get in touch with us at [email protected] for more details. At www.PacktPub.com, you can also read a collection of free technical articles, sign up for a range of free newsletters and receive exclusive discounts and offers on Packt books and eBooks. https://www.packtpub.com/mapt Get the most in-demand software skills with Mapt. Mapt gives you full access to all Packt books and video courses, as well as industry-leading tools to help you plan your personal development and advance your career. Why subscribe? Fully searchable across every book published by Packt Copy and paste, print, and bookmark content On demand and accessible via a web browser Customer Feedback Thanks for purchasing this Packt book. At Packt, quality is at the heart of our editorial process. To help us improve, please leave us an honest review on this book's Amazon page at https://www.amazon.com/dp/1788620704. If you'd like to join our team of regular reviewers, you can email us at [email protected]. We award our regular reviewers with free eBooks and videos in exchange for their valuable feedback. Help us be relentless in improving our products! Table of Contents Preface What this book covers What you need for this book Who this book is for Conventions Reader feedback Customer support Downloading the example code Downloading the color images of this book Errata Piracy Questions 1. Switching to the One Angular Introducing the One Angular From AngularJS to Angular The new beginning Angular and SemVer Summary 2. Get Going with Angular The evolution of the web – time for a new framework The evolution of ECMAScript Web components Web workers Lessons learned from AngularJS in the wild Controllers Scope Dependency injection Server-side rendering Applications that scale Templates Change detection Summary 3. The Building Blocks of an Angular Application A conceptual overview of Angular Changing directives Getting to know Angular components Components in action Components in Angular Angular modules Bootstrapping an Angular application Pipes Defining pipes Improving change detection Classical change detection Change detection in AngularJS In zone.js

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Key FeaturesGet up to date with Google's vision for AngularAlign with Angular version 5 and beyond from any direction with confidenceStart using TypeScript to supercharge your Angular applicationsUnderstand the new framework from AngularJS perspective using your prior experienceUse Angular to quickl