Дмитрий Лузанов

@Directive({
  selector: 'textarea[appText]'
})
export class TextDirective {
  @Output() public hasScrollBar = new EventEmitter<boolean>();

  constructor(private readonly elRef: ElementRef<HTMLTextAreaElement>) {}

  @HostListener('change')
  @HostListener('input')
  public changes() {
    const elem = this.elRef.nativeElement;
    this.hasScrollBar.emit(elem.clientHeight < elem.scrollHeight);
  }
}

<textarea appText (hasScrollBar)="print($event)"></textarea>

var objDiv = document.getElementById("your_div");
objDiv.scrollTop = objDiv.scrollHeight;

<li class="nav-item">
  <a href="/" class="sub">
    Тест 1
  </a>
  <div class="sub-nav">
    <a href="/">Тест 2</a>
    <a href="/">Тест 3</a>
  </div>
</li>

div.sub (оранжевый) {
  position: relative;
}

selector {
  pointer-events: none;
}

<input class="input-text" type="text" name="name" value="Your name">
				<input class="input-text" type="text" name="email" value="Email Address">
				<input class="input-text" type="text" name="password" value="Create a Password">
				<input class="input-button" type="button" value="Get started — free forever!">

<input class="input-text" type="text" name="name" placeholder="Your name">
				<input class="input-text" type="text" name="email" placeholder="Email Address">
				<input class="input-text" type="text" name="password" placeholder="Create a Password">
				<input class="input-button" type="button" placeholder="Get started — free forever!">