Angular this.el.nativeElement.selectionStart always null

Asked Aug 01 '18 at 15:56

Active Aug 01 '18 at 15:56

Viewed 2,564 times

inside an Angular directive I want to check if input text is selected,so I use this.el.nativeElement.selectionEnd and this.el.nativeElement.selectionStart but all are null,is there any clue? thanks

export class myDirective {

  constructor(private el: ElementRef) {}

  @HostListener('keydown', ['$event'])
  onKeyDown(event: KeyboardEvent) {
     console.log(this.el.nativeElement.selectionStart);
  }
}

asked Aug 01 '18 at 15:56

mrapi

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1

Are you sure that it's an input element / textrea? – Explosion Pills Aug 01 '18 at 16:03
yes – mrapi Aug 01 '18 at 16:05
2

`selectionStart` does [not apply](https://html.spec.whatwg.org/multipage/input.html#do-not-apply) to `` elements and will return null. – Alexander Staroselsky Aug 01 '18 at 16:09

Angular this.el.nativeElement.selectionStart always null

0 Answers0