title: Angular 9: How to remove empty option from select
body: <p>I am using angular 9, building a dropdown with some options. I am trying to set the default one but in the load of the page, the dropdown has a blank option. How can I remove this blank option?</p>
  
  <p>This is what I currently have:</p>
  
  <pre><code>&lt;form #f="ngForm"&gt;
    &lt;select aria-labelledby="dropdownMenuButton" [(ngModel)]="selectedValue" (change)="hideShowElements($event.target.value)"&gt;
      &lt;option [ngValue]="null"&gt;Show All&lt;/option&gt;
      &lt;option *ngFor="let item of response.results | filterUnique;" [ngValue]="item.section"&gt;{{item.section}}&lt;/option&gt;
    &lt;/select&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>Thank you!</p>