var text = '
00000 11111 22222 33333 http://localhost/ https://localhost/ 44444 55555
';
http://xxx/ -> <a href="http://xxx/" target="_blank" rel="noopener">http://xxx/</a>
util.linkUrls(text);
DEMO
var attr = '
';
http://xxx/ -> <a href="http://xxx/" [attr]>http://xxx/</a>
util.linkUrls(text, attr);
DEMO