March 2017
Intermediate to advanced
821 pages
18h 21m
English
Content preview from JavaScript: Moving to ES2015Become 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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Understanding providers
A provider tells Angular 2 how to create an instance of a service while injecting it. A provider is set using the providers or viewProviders properties of a component.
Let's look at an example of how to create providers. Place this code above the App component's code:
var Service1 = ng.core.Class({ constructor: function() { }, getValue: function() { return "xyz" } }); var Service2 = ng.core.Class({ constructor: function() { }, getValue: function() { return "def" } }); var Service3 = ng.core.Class({ constructor: function() { }, getValue: function() { return "mno" } }); var Service4 = ng.core.Class({ constructor: [Service2, Service3, function(s2, s3) { console.log(s2); console.log(s3); }], getValue: function() { return "abc" ...Become 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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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.