angular-comment-mentions/src/app/app.component.html

<div>
  Textbox:
  <div>
    <mat-form-field>
      <mat-label>Textarea</mat-label>
      <textarea matInput></textarea>
    </mat-form-field>
  </div>


  Enter your comments here:

  <app-comment-box></app-comment-box>

  <mat-form-field class="box">
    <mat-label>Textarea</mat-label>
    <app-comment-box [formControl]="form" [mentionListItems]="selectionList"></app-comment-box>
  </mat-form-field>
</div>

<div>Comment Value: {{parseComment(form)}}</div>

<router-outlet />