// a sample logging function to be added to a callbacks list
                                    
                                  
                                
                                

                                  

                                    var foo = function( value ) {
                                  
                                
                                

                                  

                                      console.log( value );
                                  
                                
                                

                                  

                                    };
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    var callbacks = $.Callbacks();
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    
                                      // add the above function to the list
                                    
                                  
                                
                                

                                  

                                    callbacks.add( foo );
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    
                                      // fire the items on the list
                                    
                                  
                                
                                

                                  

                                    callbacks.fire( "foo" );
                                  
                                
                                

                                  

                                    
                                      // outputs: foo
                                    
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    
                                      // disable further calls being possible
                                    
                                  
                                
                                

                                  

                                    callbacks.disable();
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    
                                      // attempt to fire with "foobar" as an argument
                                    
                                  
                                
                                

                                  

                                    callbacks.fire( "foobar" );
                                  
                                
                                

                                  

                                    
                                      // foobar isn't output