Forçar aparició Mòdal Carrito al custom.js

$(document).ready(function () {
prestashop.blockcart = prestashop.blockcart || {};

var showModal = prestashop.blockcart.showModal || function (modal) {
var $body = $('body');
$body.append(modal);
$body.one('click', '#blockcart-modal', function (event) {
if (event.target.id === 'blockcart-modal') {
$(event.target).remove();
}
});
};

$(document).ready(function () {
prestashop.on(
'updateCart',
function (event) {
var refreshURL = $('.blockcart').data('refresh-url');
var requestData = {};

if (event && event.reason) {
requestData = {
id_product_attribute: event.reason.idProductAttribute,
id_product: event.reason.idProduct,
action: event.reason.linkAction
};
}

$.post(refreshURL, requestData).then(function (resp) {
$('.blockcart').replaceWith($(resp.preview).find('.blockcart'));
if (resp.modal) {
showModal(resp.modal);
}
}).fail(function (resp) {
prestashop.emit('handleError', {eventType: 'updateShoppingCart', resp: resp});
});
}
);
});
});