The observer design pattern defines one-to-many relationship between objects so that changes to one object can be notified to the other dependent objects ...

Take advantage of the flyweight design pattern to reduce memory consumption when working with many similar objects.

Boston session on this topic, Design Patterns are key to using JavaScript effectively for larger applications -- what are your top tips for C# developers when it comes to JavaScript Design Patterns?

Proper use of design patterns in software development allows you to exploit previous experience with proven arrangements of objects, greatly increasing the efficiency of the coding process.