Join Justin Schwartzenberger for an in-depth discussion in this video Building and providing a service, part of Angular 2 Essential Training.
- [Instructor] Let's create a service class…for the media items.…We start by creating a new media-item.service.ts file…in the app folder.…Since we are planning to use this service elsewhere,…we need to export the class.…So let's export a class named MediaItemService.…The first thing we can do with this service…is move the static list of media items into it.…Those are located in the media item list component.…
So let's switch to that,…and copy the media items property and value.…Switch back over to the new service, and paste it in there.…We need some methods to work with this data,…so let's add a get, add, and delete method.…The get method can return the media items.…
The add can take in a media item…and push it onto the media items array.…And the delete method can find the index…of the media item in the list.…And if there is an index found,…it can splice it out of the list.…With the service built,…we need to let the app module know that it is available.…
We can do that over in the app.module.ts file.…First we wanna add an import statement…
Justin Schwartzenberger steps through the framework one feature at a time, focusing on the new component-based architecture of Angular 2. You'll learn what Angular is and what it can do, as Justin builds a full-featured web app from start to finish. After mastering the essentials, you can tackle the other project-based courses in our library and create your own Angular app.
- What is Angular?
- Setting up an Angular template
- Creating a component
- Binding events and properties
- Getting data to components
- Using directives and pipes
- Creating Angular forms
- Validating form data
- Understanding dependency injection
- Providing services
- Making HTTP calls
Skill Level Intermediate
Q: This course was updated on 03/01/2018. What changed?
A: The following topics were updated: directives and pipes, forms, dependency injection and services, HTTP, and routing.
1. Architecture Overview
3. Directives and Pipes
5. Dependency Injection and Services
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