Example: TextArea Characters Remaining

Example on how to display a "characters remaining" label under a TextArea element

<label for="paymentCommentField" class="font-weight-bold mb-2">Comment *</label>
<div class="mb-2">
  <div class="form-group">
    <textarea id="paymentCommentField" #paymentCommentField class="form-control" name="paymentComment"
      title="Comment" rows="5" maxlength="140" name="paymentComment" formControlName="paymentComment"
      placeholder="Enter comment">
    </textarea>
    <div aria-live="polite">{{(140 - paymentCommentField.value?.length)}}</div>
  </div>
</div>