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Angular 2 Cookbook

Angular 2 Cookbook

By : Matthew Frisbie, Patrick Gillespie
4.2 (25)
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Angular 2 Cookbook

Angular 2 Cookbook

4.2 (25)
By: Matthew Frisbie, Patrick Gillespie

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 (11 chapters)
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Building stateful route behavior with RouterLinkActive


It is often the case when building applications that you will want to build features that would involve which page the application is currently on. When this is a one-time inspection, it isn't a problem, as both Angular and default browser APIs allow you to easily inspect the current page.

Things get a bit stickier when you want the state of the page to reflect the state of the URL, for example, if you want to visually indicate which link corresponds to the current page. A from-scratch implementation of this would require some sort of state machine that would know when navigation events occur and what and how to modify at each given route.

Fortunately, Angular 2 gives you some excellent tools to do this right out of the box.

Note

The code, links, and a live example of this are all available at http://ngcookbook.herokuapp.com/3308/.

Getting ready

Begin with the Array and anchor-tag-based implementation shown in the Navigating with routerLinks...

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