Join Justin Schwartzenberger for an in-depth discussion in this video Getting data to the component with Input, part of Angular 2 Essential Training.
- [Instructor] You can define properties…for components you create…and make them available to be set…via the property binding syntax…by using an Angular decorator named Input.…Let's refactor the media item component…to move away from the static content…and support sending it a media item to display.…We will start with the media-item.component.ts file.…We need to import the Input decorator to use it.…Now, this comes from the @angular/core scoped package,…and we already have an import statement for that.…
The import statements support multiple import items…in the curly braces separated by commas.…So, we can add Input to this list.…The Input decorator is designed to be used…on a class property.…Let's create a new class property…on the mediaItemComponent class named mediaItem,…and we can decorate it with the Input decorator,…placing the @Input…with the parenthesis in front of the property.…This will tell Angular…that we want it to support any property bindings…placed on instances of the mw-media-item elements…where the property name is mediaItem.…
Author
Justin Schwartzenberger
Updated
3/1/2018Released
10/31/2016Justin 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
- Routing
Skill Level Intermediate
Duration
Views
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.
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Introduction
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Welcome1m 27s
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Why use AngularJS 2?1m 36s
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Using the exercise files1m 51s
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Basics of TypeScript2m 24s
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Course overview1m 2s
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1. Architecture Overview
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Directives and pipes1m 40s
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Data binding1m 53s
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Dependency injection1m 54s
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Data persistence1m 47s
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Routing1m 50s
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2. Components
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NgModule and the root module5m 59s
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Component metadata2m 4s
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The component selector2m 12s
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The component template2m 59s
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Styling a component5m 3s
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Property binding2m 30s
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3. Directives and Pipes
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Structural directives: ngFor3m 34s
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Attribute directives: custom3m 53s
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Using directive values3m 36s
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Angular pipes: built in3m 1s
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Angular pipes: custom4m 28s
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4. Forms
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Angular forms1m 29s
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Template-driven forms4m 45s
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Model-driven forms4m 19s
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Validation: built in3m 28s
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Validation: custom3m 2s
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Error handling Updated5m 10s
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5. Dependency Injection and Services
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Services in Angular2m 22s
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Class constructor injection2m 39s
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The Inject decorator3m 40s
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Injection token Updated3m 36s
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6. HTTP
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7. Routing
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Router links2m 36s
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Conclusion
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Next steps1m 20s
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Video: Getting data to the component with Input