title: Number formatting as-you-type in an input field in Angular2 with double binding
body: <p>With pipes like</p>
  
  <pre><code>&lt;input....
      [ngModel]="whatever | myCurrencyPipe"
      (ngModelChange)="whatever = $event"
      type="text"
      name="myCurreny"
      ...
  </code></pre>
  
  <p>you can format an existing value. Scarcely you want to overwrite the value, you have problems. And with the solution above, the double binding has been abrogated.</p>
  
  <p>There are plenty of <a href="https://github.com/customd/jquery-number" rel="nofollow">jQuery-Libraries</a> but I am looking for native angular2 solutions.</p>
  
  <p>Can someone help me?</p>