%s', esc_url( $product->add_to_cart_url() ), esc_attr( $product->id ), esc_attr( $product->get_sku() ), esc_attr( isset( $quantity ) ? $quantity : 1 ), $product->is_purchasable() && $product->is_in_stock() ? 'add_to_cart_button' : '', $product->supports( 'ajax_add_to_cart' ) ? 'ajax_add_to_cart' : '', esc_attr( $product->product_type ), esc_html( $product->add_to_cart_text() ) ), $product );