Join Justin Schwartzenberger for an in-depth discussion in this video Working with events in directives, part of Angular 2 Essential Training (2016).
- [Voiceover] Directives can not only…handle changing host element properties…via host bindings,…but they can also be set up to…respond to host element events via host listeners.…Let's jump into the favorite.directive.ts file…and add some host listeners to…toggle on and off as CSS class is-favorite-hovering.…Angular provides another decorator…for handling wiring up to host element events.…The host listener decorator,…host to listener is found in Angular 2/core.…Just like host binding,…so we can add that to the import statement.…
Before we use the host listener decorator,…let's add another host binding…for the is-favorite-hovering CSS class…and use it to decorate a favorite directive…class property named hovering,…setting it to a default value of false.…We will toggle this value from…mouse hover events to handle adding…or removing the CSS class.…Okay, let's add some host listeners.…The host listener decorator takes…in the name of the event as a string…for the first argument,…and an optional second argument…that is an array of arguments that…
- What is Angular?
- Setting up an Angular template
- Creating a component
- Displaying data
- Working with events
- Using two-way data binding
- Creating a subcomponent
- Using the built-in HTTP module
- Using the built-in router module
Skill Level Intermediate
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Next steps1m 20s
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