Javascript for a quick cart view / add in shopify

shopify.cart

var Shopify = Shopify || {};

jQuery(function($) {
  Shopify.shop = "redacted.url";
  Shopify.onCartUpdate = function(cart) {
  $.getJSON('/cart.js', function (cart, textStatus) {
    $('.cartcount').each(function() {
      $(this).html(cart.item_count);
    });
    if (cart.item_count == 0) {
      console.log('if');
      $('#cart').fadeOut('500', function() {
        $('#empty').fadeIn('500');
      });
    }

    var subtotal = cart.total_price.toString();
    $('#cart-subtotal').html('<b><span class="money">$'+ subtotal.slice(0,-2) +'.' + subtotal.slice(-2)+'</span></b>');
  });
  Shopify.loadCart();
};
  Shopify.quickAddtoCart = function(form_id) {
    $.ajax({
      type: 'POST',                             
      url: '/cart/add.js',
      dataType: 'json',                               
      data: $('#'+form_id).serialize(),            
      success: Shopify.addToCartOk,                        
      error: Shopify.addToCartFail                            
    });
  };
  Shopify.addToCartOk = function(product) { 
    $('#status-msg .msg').html('Item Successfully added to your cart');
    $('#status-msg').stop(true, true).fadeIn('400').delay('3000').fadeOut('400');
    Shopify.onCartUpdate();
  };
  Shopify.addToCartFail = function(product) {
    $('#status-msg .msg').html('Oops! We have a problem. This might be out of stock, or already in your cart'); 
    $('#status-msg').stop(true, true).fadeIn('400').delay('4000').fadeOut('400');
  };
Shopify.loadCart = function() {
  $('#cart-qv').load('/cart?view=quick', function(){
    $('#cart-qv .cart-item .x').on('click', function() {
      $('.cart-item[data-id="'+$(this).data('id')+'"]').animate({height: 'toggle', opacity: 0}, 400, function() {
        Shopify.removeItem($(this).data('id'));
        $(this).remove();
      });
    });
  }); 
};