Open external links in a new tab by default

If you want all the external links to open in another tab you have to paste the following code into the Code injection page of your Ghost instance (Site Footer section):

<script>
  const anchors = document.querySelectorAll('a');
    
  for (x = 0, l = anchors.length; x < l; x++) {
    const regex = new RegExp('/' + window.location.host + '/');
        
    if (!regex.test(anchors[x].href) && anchors[x].href.indexOf('javascript') == -1) {
      anchors[x].setAttribute('target', '_blank');
      anchors[x].setAttribute('rel', 'noopener');
    }
  }
</script>