gistfile1.txt

$(document).ready(function(){
      setInterval(countdomains(), 1000);
      function countdomains(){
            var cb;
            $(".letters").each(function(){
                  cb = $(this);
                  $.getJSON("/api/domain/countByLetter?letter="+$(this).data('letter'), null, function(data){
                        cb.text(data);
                  });
            });
      }
});