JavaScript: Functional Programming for JavaScript Developers

Chapter 5. Behavioral Patterns

In the last chapter we looked at structural patterns that describe ways in which objects can be constructed to ease interaction.

In this chapter we'll take a look at the final, and largest, grouping of GoF patterns: behavioral patterns. These patterns are ones that provide guidance on how objects share data or, from a different perspective, how data flows between objects.

The patterns we'll look at are as follows:

• Chain of responsibility
• Command
• Interpreter
• Iterator
• Mediator
• Memento
• Observer
• State
• Strategy
• Template method
• Visitor

Once again there are a number of more recently identified patterns that could well be classified as behavioral patterns. We'll defer looking at those until a later chapter, instead keeping to the GoF ...