var orderTotal;

$(function() {
  $('#order_quantity').click(orderTotal);
  return orderTotal();
});

orderTotal = function() {
  var price, quantity, total;
  quantity = $('#order_quantity').val();
  price = $('#ticket-price').data('url');
  total = quantity * price;
  $('.stripe-button').attr('amount', total);
  return alert(total);
};