$(function(){
        $('#submit').click(function (){
          var data = { q: $('#q').val() };
          $.ajax({
            url:         'http://api.hgotoh.work/sitteru.pl',
            type:        'POST',
            contentType: 'application/json',
            data:        JSON.stringify(data)
          }).done(function(data){
               $('#answer').text(data.message);
          }).fail(function(data){
               $('#answer').text('通信障害かも…');
               alert(data);
          });
        });
      });