Unit 4 - Lesson 0: Understanding Objects Key Terms encapsulation state behavior data properties accessor properties method enumerable private data factory functions Essential Questions What is encapsulation? Why do we use it? How do objects enable it? How do objects encapsulate state? How do they encapsulate behavior? How do we create private data within JavaScript objects? What is the role of accessor properties? What are factory functions and why are they useful? Learning Assignments Reading: Eloquent JavaScript - Chapter 6: The Secret Life of Objects (stop at Prototypes section) Video: Factory Functions Book: The Principles of Object-Oriented JavaScript - Chapter 3: Understanding Objects Practice Problem Set 4.0 on Canvas