Add target=_blank automatically to external links and more

13. August 2020

jQuery(document).ready(function () {
  jQuery.expr[':'].external = function (obj) {
    var isBlank = false;

    if (!obj.href.match(/^mailto:/) && (obj.hostname != location.hostname) && !obj.href.match(/^javascript:/) && !obj.href.match(/^javascript:/) && !obj.href.match(/^$/)) {
      isBlank = true;
    }

    if (obj.href.match(/.[pP][dD][fF]$/)) {
      //PDFs
      isBlank = true;
    }

    return isBlank;
  };


  jQuery('a:external').attr('target', '_blank');
});

by Chris Pratt