I have an element in HTML template of an Angular 2 app. I add a directive to it:
<div myCustomDirective>HELLO</div>
I want that whenever I hover over the div
the text inside the div
should be changed, but it needs to be done from Directive
(mouseover)
event.
How to emit an event from a Directive
and capture it inside a parent element?
If myCustomDirective
has an output @Output() someEvent:EventEmitter = new EventEmitter();
then you can use
<div myCustomDirective (someEvent)="callSomethingOnParent($event)">HELLO</div>
I'd like to add to @GünterZöchbauer's answer that if you're trying to emit an event from a structural directive and using an asterisk ( *
) syntax when applying the directive, it won't work. Angular 5.2.6 still doesn't support @Output
binding for structural directives if used with the *
syntax (see GitHub issue ).
You have to transform it to de-sugarized form ( see here ), ie:
<ng-template [customDirective]="foo" (customDirectiveEvent)="handler($event)">
<div class="name">{{hero.name}}</div>
</ng-template>
instead of:
<div *customDirective="foo" (customDirectiveEvent)="handler($event)" class="name">{{hero.name}}</div>
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