Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Angular 2 Cookbook
  • Toc
  • feedback
Angular 2 Cookbook

Angular 2 Cookbook

By : Matthew Frisbie, Patrick Gillespie
4.2 (24)
close
Angular 2 Cookbook

Angular 2 Cookbook

4.2 (24)
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)
close

Execution outside the Angular zone


The utility of zone.js is terrific, since it works automatically, but a seasoned software engineer knows this often comes at a price. This is especially true when the concept of data binding comes into play.

In this recipe, you'll learn how to execute outside the Angular zone and what benefits this affords you.

Note

The code, links, and a live example related to this recipe are available at http://ngcookbook.herokuapp.com/3362/.

How to do it...

To compare execution in different contexts, create two buttons that run the same code in different zone contexts. The buttons should count to 100 with setTimeout increments. Use the performance global to measure the time it takes:

[src/app/app.component.ts] 
 
import {Component, NgZone} from '@angular/core'; 
 
@Component({ 
  selector: 'app-root', 
  template: ` 
    <button (click)="runInsideAngularZone()"> 
      Run inside Angular zone 
    </button> 
 ...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech
bookmark search playlist download font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete