title: Clipboard.writeText() does'nt work on Mozilla & IE
body: <p>Am using the following function to put some text to my clipboard:</p>
  
  <pre><code>navigator.clipboard.writeText('Text to be copied').then(function() {
              console.log('Template copied to clipboard')
            }, function() {
              console.log('Unable to write to clipboard. :-(');
            });
  </code></pre>
  
  <p>Unfortunately, It doesn't work on Mozilla &amp; IE. It works fine on Chrome.
  I've already tried using:</p>
  
  <pre><code>Document.execCommand('copy')
  </code></pre>
  
  <p>I found this <a href="https://developers.google.com/web/updates/2018/03/clipboardapi" rel="noreferrer">tutorial</a> in developers.google.com, but the example seems to work fine in Chrome and not in other browsers. What am I doing wrong here ?</p>