Question [EASY] Help me with understanding the variables

[Insanic12]

Hey so I wanted my bot to check a users inventory. This is how my code looks like.

var TradeOfferManager = require("steam-tradeoffer-manager");

var manager = new TradeOfferManager({
  "steam": client,
  "language": "en"
});

manager.loadUserInventory(user, "730", "1", "true", ???);
        console.log(???.inventory);

https://github.com/DoctorMcKay/node-steam-tradeoffer-manager/wiki/TradeOfferManager#loaduserinventorysteamid-appid-contextid-tradableonly-callback

 

So as you see here at the code and the link i provided I haven't defined the callback thing yet indicated with "???". I don't really know what callback means and how I can use it.

Please help me understand this variable.

 

Thanks in advance!

[Dr. McKay]

This may help: https://sporto.github.io/blog/2012/12/09/callbacks-listeners-promises/

[Insanic12]

Thanks alot helped me out!

[Insanic12]

This may help: https://sporto.github.io/blog/2012/12/09/callbacks-listeners-promises/

        manager.loadUserInventory(user, 730, 2, true, function (inventory, err) {
          if (err) {
            console.log(warning("[WARNING]: Couldn't load inventory of " + user + "!"));
          } else {
          console.log(inventory);
        }
        });

Now when i finished the script i get a error. If the script finds a error it will print in console the error message. And it prints error all the time even if i checked the ID of the player i want to check.

Edited October 25, 2016 by Insanic12