A guide on implementing RxJS Observables to target a specific DIV element

Currently, I am working with Angular 2.

At the moment, I have been using this method to select a specific DIV element:

<div #aaa>
</div>

@ViewChild('aaa') private aaa: ElementRef;
ngAfterViewInit() {
  let item = this.aaa.nativeElement;
  item.style.top = '10px';
}

I was wondering if there is an RxJS Observable approach to selecting that particular item and then executing something like item.style.top = '10px';? Thank you!

Answer №1

When utilizing @Refs() instead of @Selectors(), you will receive a QueryList<Q> instance, containing a changes property that is an Observable<Q>.

@Refs('bbb') private bbb: QueryList<HTMLElement>; 
...
componentDidMount() {
  this.bbb.changes.subscribe(element => element.style.left = '20px');
}

Answer №2

How do you feel about this?

<section [class.active]="isActive"></section>

toggleActive() {
  this.isActive = true;
}

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