Advanced Search

Return to Snippet

Revision: 58748
at July 31, 2012 19:48 by timsommer
Initial Code 
(function(){
  
  var CarManager = {
  
      // request information
      requestInfo: function( model, id ){
        return 'The information for ' + model + 
        ' with ID ' + id + ' is foobar';
      },      
      
      // purchase the car
      buyVehicle: function( model, id ){
        return 'You have successfully purchased Item ' 
        + id + ', a ' + model;
      },
      
      // arrange a viewing
      arrangeViewing: function( model, id ){
        return 'You have successfully booked a viewing of ' 
        + model + ' ( ' + id + ' ) ';
      }
    
};
    
})();

CarManager.execute = function (name) {
    return CarManager[name] && CarManager[name].apply(CarManager, [].slice.call(arguments, 1));
};

/*** Usage ***/
CarManager.execute("arrangeViewing", "Ferrari", "14523");
CarManager.execute("requestInfo", "Ford Mondeo", "54323");
CarManager.execute("requestInfo", "Ford Escort", "34232");
CarManager.execute("buyVehicle", "Ford Escort", "34232");
Initial URL 

                                

                                                            

                                    

                                        

                                        Initial Description
                                        

                                    

                                    
The Command pattern aims to encapsulate method invocation, requests or operations
into a single object and gives you the ability to both parameterize and pass method calls
around that can be executed at your discretion. In addition, it enables you to decouple
objects invoking the action from the objects which implement them, giving you a
greater degree of overall flexibility in swapping out concrete 'classes'.

                                

                                                            

                                    

                                        

                                        Initial Title
                                        

                                    

                                    
JavaScript Command Pattern

                                

                                                            

                                    

                                        

                                        Initial Tags
                                        

                                    

                                    
javascript, command, html

                                

                                                            

                                    

                                        

                                        Initial Language
                                        

                                    

                                    
JavaScript