内部指令:

您可以使用@Output发送事件并以

You can use @Output to send an event and capture it in the form

@Output typeaheadResult = new EventEmitter(); 

...

// Whenever user selects a result dispatch the event 
this.typeaheadResult.emit(changedInput);

您可以在HTML内捕获

Inside your HTML you can capture it

 <input formControlName="name"
          myTypeahead="'http://someRemoteUrl'"
          (typeaheadResult)="doSomething()"
           />