Ghost: Open links in new tab

ghost-link

//By default, Ghost opens links in the existing tab. Insert this in your Ghost JS file to get all your links to open in a new tab instead!
    $('a').each(function() {
   var a = new RegExp('/' + window.location.host + '/');
   if(!a.test(this.href)) {
       $(this).click(function(event) {
           event.preventDefault();
           event.stopPropagation();
           window.open(this.href, '_blank');
       });
   }
});

What must I add to make all external links nofollow?

I like more this one:

<script>
  $(document).ready(function() { 
	$("a[href^='http']").attr("target","_blank");
  });
</script>

Added in the footer of the Code Injection menu in the admin.

As, most of internal link are starting with '/', and they should be opened in the same TAB but, external links starts with http... and it is great to open them in the new TAB

You could also check this.href.indexOf(window.location.host) == -1 if it is in internal or external link.

See this blog article for more information and a detailed instruction how to use the code in Ghost and another HTML workaround for every post or page.