Code share

gistfile1.txt

//comment the this line into shop.js
//e(".ajax-success-modal").find(".ajax_qty").text(r);
// and add this code below this line
e.ajax({
   type: 'GET',
   dataType: 'json',
   url: '/cart.js',
   success: function(cart){
      e(".ajax-success-modal").find(".ajax_qty").text(cart.item_count);
   }
});