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

                                  

                                    var foo = function( value ) {
                                  
                                
                                

                                  

                                      console.log( "foo:" + value );
                                  
                                
                                

                                  

                                    }
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    var callbacks = $.Callbacks();
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    
                                      // add the function "foo" to the list
                                    
                                  
                                
                                

                                  

                                    callbacks.add( foo );
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    
                                      // fire the items on the list
                                    
                                  
                                
                                

                                  

                                    callbacks.fire( "hello" ); // outputs: "foo: hello"
                                  
                                
                                

                                  

                                    callbacks.fire( "world" ); // outputs: "foo: world"
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    
                                      // add another function to the list
                                    
                                  
                                
                                

                                  

                                    var bar = function( value ){
                                  
                                
                                

                                  

                                        console.log( "bar:" + value );
                                  
                                
                                

                                  

                                    }
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    
                                      // add this function to the list
                                    
                                  
                                
                                

                                  

                                    callbacks.add( bar );
                                  
                                
                                

                                  

                                     
                                  
                                
                                

                                  

                                    
                                      // fire the items on the list again
                                    
                                  
                                
                                

                                  

                                    callbacks.fire( "hello again" );
                                  
                                
                                

                                  

                                    
                                      // outputs:
                                    
                                  
                                
                                

                                  

                                    
                                      // "foo: hello again"
                                    
                                  
                                
                                

                                  

                                    
                                      // "bar: hello again"