| Conditions | 2 | 
| Paths | 2 | 
| Total Lines | 7 | 
| Code Lines | 6 | 
| Lines | 0 | 
| Ratio | 0 % | 
| Changes | 1 | ||
| Bugs | 0 | Features | 0 | 
| 1 | (function(d, s, id){ | 
            ||
| 2 | var js, fjs = d.getElementsByTagName(s)[0];  | 
            ||
| 3 |     if (d.getElementById(id)) {return;} | 
            ||
| 4 | js = d.createElement(s); js.id = id;  | 
            ||
| 5 | js.src = "https://connect.facebook.net/"+lang+"/all.js";  | 
            ||
| 
                                                                                                    
                        
                         | 
                |||
| 6 | fjs.parentNode.insertBefore(js, fjs);  | 
            ||
| 7 | }(document, 'script', 'facebook-jssdk'));  | 
            
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.
To learn more about declaring variables in Javascript, see the MDN.