<button type="submit" class="tab-btn-sumbit" id="guardar">Si</button>

 <button type="reset" class="tab-btn-cancel" id="cancelar">No</button>

$(document).on("click","#cancelar",function(e){
 closeModal();
 });
  $(document).on("click","#guardar",function(e){//botones

 $('.cotizador_box').hide();
 $('.loader').show();
 $.ajax({

   type:"POST",
   url:"<?=URL?>velada/Guardar",
  data:$('#form-velada').serialize(),
  dataType:"json",
  success:function(data){
   closeModal();
   $('#messages').html(data.message);
   $('#resumen').html('');
  }
  });
  });