function getCatalogData(catalogId, storePartId, amount, callback) { $.get(`https://store.tildacdn.com/api/getproductslist/?storepartuid=${storePartId}&recid=${catalogId.substring(1)}&c=${new Date().getTime()}&getparts=true&getoptions=true&slice=1${amount ? '&size=' + amount : ''}`, function (data) { callback(JSON.parse(data)) }); }