Ella theme line item properties

ella.js

        initProductAddToCart: function() {
            if ($('#product-add-to-cart').length > 0) {
                $('#product-add-to-cart').click(function(event) {
                    event.preventDefault();
                    if ($(this).attr('disabled') != 'disabled') {
                        if (!window.ajax_cart) {
                            $(this).closest('form').submit();
                        } else {
                            var variant_id = $('#add-to-cart-form select[name=id]').val();
                            if (!variant_id) {
                                variant_id = $('#add-to-cart-form input[name=id]').val();
                            }
                            var quantity = $('#add-to-cart-form input[name=quantity]').val();
                            if (!quantity) {
                                quantity = 1;
                            }
                            var title = $('.product-title h2').html();
                            var image = $('#product-featured-image').attr('src');
                            var $properties = $(this).closest('form').find('[name^="properties"]');
                            var properties = {};
                            $($properties).each(function(index, el){
                              var name = $(el).attr('name').substr(11, $(el).attr('name').length - 12)
                              properties[name] = $(el).val();
                            });
                            ella.doAjaxAddToCart(variant_id, quantity, title, image, properties);
                        }
                    }
                    return false;
                });
            }
        },
        
        
        
        // ...
        
        
        
        doAjaxAddToCart: function(variant_id, quantity, title, image, properties) {
          var data = {}
          data.quantity = quantity
          data.id = variant_id
          data.properties = properties
            $.ajax({
                type: "post",
                url: "/cart/add.js",
                data: data, //'quantity=' + quantity + '&id=' + variant_id,
                dataType: 'json',
                beforeSend: function() {
                    ella.showLoading();
                },
                success: function(msg) {
                    ella.hideLoading();
                    $('.ajax-success-modal').find('.ajax-product-title').html(ella.translateText(title));
                    $('.ajax-success-modal').find('.ajax-product-image').attr('src', image);
                    $('.ajax-success-modal').find('.btn-go-to-wishlist').hide();
                    $('.ajax-success-modal').find('.btn-go-to-cart').show();

                    ella.showModal('.ajax-success-modal');
                    ella.updateDropdownCart();
                },
                error: function(xhr, text) {
                    ella.hideLoading();
                    $('.ajax-error-message').text($.parseJSON(xhr.responseText).description);
                    ella.showModal('.ajax-error-modal');
                }
            });
        },