How to transfer a variable from a cable?

Question

Node.js

function getFloat(url, cb) {
    var options = {
        url: url
    };
        function cab(error, response, body){
            if (!error && response.statusCode == 200) {
                cb(JSON.parse(body).iteminfo.floatvalue);
            }
        }
        request(options, cab);
}
Bot.prototype.inventory = function(command, data, callback){
    var self = this, req = this._request, s64 = this.steamClient.steamID;
        var float;
    this.offers.loadMyInventory({appId: this._options.appid, contextId: 2, language: "english"},function(err, botItems){
        if(err){
            if (typeof callback === 'function') {
                callback(false, err.message);
            }
            return;
        };

        //var float = JSON.parce(body.iteminfo.floatvalue);

        var items = [], i = 0, fvl;

        botItems.forEach(function(item){
        var url3 = "http://api.csgofloat.com:1739/?url="+item.actions[0].link;
        var url2 = url3.replace('%owner_steamid%', s64);
        var url = url2.replace('%assetid%', item.id);
        getFloat(url, function(f){
           console.log(f); (<- ЭТА ПЕРЕМЕННАЯ НУЖНА)
        });
        console.log(fn);
            items[i++] = {
                assetid: item.id,
                name: item.name,
                classid: item.classid,
                instanceid: item.instanceid,
                amount: item.amount,
                pos: item.pos,
                icon_url: item.icon_url,
                icon_url_large: item.icon_url_large,
                market_name: item.market_name,
                market_hash_name: item.market_hash_name,
                name_color: item.name_color,
                type: item.type,
                tags: item.tags,
                actions: item.actions,
                floatvalue: (ТУТ НУЖНА ЭТА ПЕРЕМЕННАЯ)
                };
            });
            this.sendCommand(this.COMMANDS_ID.inventory, {itemsd: items}, function(response){
            if (typeof callback === 'function') {
                callback(response.success);
            }
        });
    }.bind(this));
};

Answer 1

Maybe you should use promises?