title: Concatenate in Angular HTML Input Variables
body: <p>How do I concatenate strings in Angular HTML Input? The following is creating dropdown.
  What we want is have txtField be concatenation of addressCode + ' ' + addressDescription,  trying placing into input, did not work.
  Looking for way in html first, before trying in angular typescript if possible.</p>
  
  <p><strong>Original:</strong></p>
  
  <pre><code>&lt;app-drop-down 
    [listItems]="'addressList'"
    [txtField]="'addressCode'"
    [txtValue]="'addressId'"
  &lt;/app-drop-down&gt;
  </code></pre>
  
  <p>Attempt</p>
  
  <pre><code>&lt;app-drop-down 
    [listItems]="'addressList'"
    [txtField]="'addressCode' + 'addressDescription'"
    [txtValue]="'addressId'"
  &lt;/app-drop-down&gt;
  </code></pre>