title: Angular - HTML5 input type "datetime-local" not working with Date Object
body: <p>I've tried in many ways.
  First I get the date as Moment.js object,</p>
  
  <pre><code> this.meeting.start = event.date.local().toDate();
  </code></pre>
  
  <p>I also tried the following: </p>
  
  <pre><code>this.meeting.start = new Date(this.meeting.start.toLocaleString());
  </code></pre>
  
  <p>my html:</p>
  
  <pre><code>&lt;input 
    type="datetime-local" 
    class="form-control" 
    value="{{meeting.start}}" 
    [(ngModel)]="meeting.start" /&gt;
  </code></pre>
  
  <p>but the UI window is empty:"--:-- dd/mm/yy"</p>
  
  <p>Thanks.</p>