It's not even sloppy It’s the definition of sloppy. Rule One of Javascript is that you check every 3rd party dependency before every call. window.ga && ga(“

It's not even sloppy It’s the definition of sloppy. Rule One of Javascript is that you check every 3rd party dependency before every call. window.ga && ga(“user likes socks”); For exactly this reason: because often all you get is what you sent down the wire yourself. You still need to work with that.