In this chapter, we continued to explore the JavaScript language, zooming out from previous chapters to consider larger pieces of syntax, such as expressions, statements, and blocks. These are programmatic scaffolding components in which we can place the types and operations we've previously learned about. We also covered the complicated mechanisms of scopes, hoisting, and closures. Understanding how these concepts all work together is vital to understanding other people's JavaScript programs and constructing your own.

In the next chapter, we explore how to control flow within JavaScript. This'll allow us to weave together expressions and statements into larger bodies of logic in a clean way. We will then explore the art of abstraction design by learning about design patterns. Though the process of learning these topics individually may appear arduous, by the end of the book you'll have a thorough and powerful understanding of JavaScript that'll enable you to pay less attention to the oddities of the language and more attention to the cleanliness of your code.