Join Justin Schwartzenberger for an in-depth discussion in this video Subscribing to component events with Output, part of Angular 2 Essential Training.
- [Instructor] Angular has an output decorator…that allows you to expose event bindings on components.…We can update the media item component…and make use of the Output decorator…to provide notifications of a delete request.…Using output is similar to how you use input.…First we need to import the output decorator…from the Angular core scope package.…Then we create a property on the component class.…
Let's call it delete…and decorate it with the @output…and the pair of parentheses.…The different with output is we want to set the property…to an EventEmitter object.…To do that, we need to import the EventEmitter,…which also comes from the Angular core scoped package.…So let's go up to our import statements…and add EventEmitter to the import statement…for the Angular core scoped package…and then, back down at the new property,…we can set that equal to a new EventEmitter.…
Like the input decorator,…the output decorator allows you…to pass in a string value if you want to alias the property.…But again, it's recommended you only use the alias…
Justin Schwartzenberger steps through the framework one feature at a time, focusing on the component-based architecture of Angular. 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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