title: Dynamically add attribute to input element
body: <p>I'm creating a bunch of <code>input</code> elements via an <code>*ngFor</code> statement, and on some of them I want to add an <code>data-bv-integer="true"</code> attribute, and on some I don't.  Whether it appears or not is based on a property of the <code>*ngFor</code> item.</p>
  
  <p>Is that possible to do?</p>
  
  <p>I tried to add <code>[attr.data-bv-integer]="false"</code> as a test to see if that would remove the item but it doesn't.</p>