var itemList = {};

        const proxyurl = "https://cors-anywhere.herokuapp.com/";
        const url = "https://csgoempire.gg/api/v2/p2p/inventory/cached"; // site that doesn’t send Access-Control-*
        console.log(proxyurl + url);
        fetch(proxyurl + url)
        .then(response => response.json())
        .then(contents => {
            for (elt in contents) {
                if(!(contents[elt].hasOwnProperty('custom_price'))) {
                    itemList[contents[elt].market_name] = contents[elt].market_value / 100;
                }
            }

            console.log(itemList);
        })
        .catch(() => console.log("Can’t access " + url + " response. Blocked by browser?"));