title: Clear Select value in Angular 2
body: <p>I have a select input where I have to clear the selected value. Here even If if set <strong>valueS = null</strong> Select is still showing last selected value. When I on the button to clear the selected value from Select. How to achieve it?</p>
  
  <pre><code>    &lt;select (ngModelChange)="onChange($event)" [(ngModel)]="valueS"&gt;
          &lt;option value="null" &gt;Add filter&lt;/option&gt;
          &lt;option value="Hi"&gt;Hi&lt;/option&gt;
          &lt;option value="Hey"&gt;Hey&lt;/option&gt;
          &lt;option value="Hello"&gt;Hello&lt;/option&gt;
      &lt;/select&gt;
  &lt;button (click)="clear()"&gt;Clear&lt;/button&gt;
  </code></pre>
  
  <p>in <code>Component</code>:</p>
  
  <pre><code>clear() {
      this.valueS = null
  }
  </code></pre>