Here are the examples of Design patterns popularly used in JavaScript.
Mentioned below are three classification of design patterns there are many other patters described by GANG OF FOUR , But only these patterns mentioned below are commonly used in day to day scripting.
Creational
a.Constructor
b.Module
c.Factory
d.Singleton
Structural
a.Facade
b.Decorator
c.Flyweight
Behavioral
a.Observer
b.Command
c.Interceptor