title: focus for ng-select not working Angular 5
body: <p>i'm trying to use focus for ng-select in angular 5 but its not working </p>
  
  <p>i'm working with <a href="https://valor-software.com/ng2-select/" rel="nofollow noreferrer">ng2-select</a></p>
  
  <hr>
  
  <p>How to use focus for ng-select in Angular 5 ?</p>
  
  <pre><code>&lt;label class="input"&gt;
     &lt;input (blur)="goTo()" type="text"&gt;
  &lt;/label&gt;
  
  &lt;label class="select" &gt;
      &lt;div *ngIf="items.length &gt; 0" &gt;
         &lt;ng-select     #select [items]="items"&gt;
         &lt;/ng-select&gt;
      &lt;/div&gt;
  &lt;/label&gt;
  
  
  
  
  
  @ViewChild('select') myElement: ElementRef;
  
      goTo(){
        this.myElement.element.nativeElement.focus();
      }
  </code></pre>