JSFiddle - React, Tailwind, and code Playground

HTML

<!-- note: the "result" iframe runs at fiddle.jshell.net -->
<a href="http://www.fiddle.jshell.net/yea">a</a>
<a href="http://fiddle.jshell.net/yay">b</a>
<a href="http://bobsyourfiddle.jshell.net/lol">c</a>
<a href="http://bobsyouruncle.com/fiddle.jshell.net">d</a>
<a href="yea">e</a>

JavaScript

$("a").filter(function() {
    return this.hostname &&
           this.hostname.replace(/^www\./, '') !==
              location.hostname.replace(/^www\./, '');
}).each(function() {
    $(this).attr({
        target: "_blank",
        title: "Visit " + this.href + " (click to open in a new window)"
    });
});