Welcome to our exploration of Compound Data Structures in JavaScript. Having navigated through Maps, Sets, and Arrays, we'll delve into nested Maps and arrays. These structures enable us to handle complex and hierarchical data, which is typical in real-world scenarios. Nested data structures are commonly used to represent data models like organizational charts, product categories, and multi-dimensional datasets. This lesson will guide you through a recap of the basics, as well as the creation and modification of nested Maps and arrays.
As a quick recap, Arrays are mutable, ordered collections, while Maps are collections of key-value pairs with maintained insertion order. These structures can be nested. Here's a simple example of a school directory:
