Book Image

Angular 2 Cookbook

By : Patrick Gillespie, Matthew Frisbie
Book Image

Angular 2 Cookbook

By: Patrick Gillespie, Matthew Frisbie

Overview of this book

Angular 2 introduces an entirely new way to build applications. It wholly embraces all the newest concepts that are built into the next generation of browsers, and it cuts away all the fat and bloat from Angular 1. This book plunges directly into the heart of all the most important Angular 2 concepts for you to conquer. In addition to covering all the Angular 2 fundamentals, such as components, forms, and services, it demonstrates how the framework embraces a range of new web technologies such as ES6 and TypeScript syntax, Promises, Observables, and Web Workers, among many others. This book covers all the most complicated Angular concepts and at the same time introduces the best practices with which to wield these powerful tools. It also covers in detail all the concepts you'll need to get you building applications faster. Oft-neglected topics such as testing and performance optimization are widely covered as well. A developer that reads through all the content in this book will have a broad and deep understanding of all the major topics in the Angular 2 universe.
Table of Contents (18 chapters)
Angular 2 Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface

Introduction


Forms are important elemental constructs for nearly every web application, and they have been reimagined for the better in Angular 2. Angular 1 forms were very useful, but they were totally dependent on the conventions of ngModel. Angular 2's newfound conventions remove it from ngModel dependence and offer a fresh approach to form and information management that ultimately feels cleaner and more approachable.

Fundamentally, it is important to understand where and why forms are useful. There are many places in an application where multitudinous input demands association, and forms are certainly useful in this context. Angular 2 forms are best used when validating the said input, especially so when multiple-field and cross-field validation is required. Additionally, Angular forms maintain the state of various form elements, allowing the user to reason the "history" of an input field.

It is also critical to remember that the Angular 2 form behavior, much in the same way as its event...