November 2016
Beginner to intermediate
320 pages
6h 2m
English
Content preview from Ionic 2 Cookbook - Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Creating a shared service to provide data to multiple pages
When you develop an app that involves a lot of pages and communication to the backend, you will need to have a way to communicate across the pages and components. For example, you may have a service to request user data from the backend and store it in a common local service. Then, you will need to provide a way for the user to update their user data and see the update in real time. When the user navigates to different pages, the same information will be pulled and rendered as well without making multiple trips to the backend. This is a very common scenario that requires the use of the @Injectable decorator in Angular 2.
Observe the following screenshot of the app you will build:
The user ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.