Parts of Syntax and Scope

In this chapter, we will continue to explore JavaScript's syntax and constructs. We'll be delving into the fundamentals of expressions, statements, blocks, scopes, and closures. These are the less visible parts of the language. Most programmers assume that they already have a good grasp of how things such as expressions and scopes work, but, as we've seen, our intuitions of how things should work may not always align with how they truly do work. The constructs we'll be learning about in this chapter are the crucial larger building blocks of our programs, so it is of vital importance to understand them fully before we explore more abstract concepts such as control flow and design patterns.

Why are we learning this now? We've now got a solid grasp of what types are available in JavaScript and how to manipulate them via operators. The next logical step is to study syntactic scaffolding components, where we can place these types and operations, and how these scaffolding components behave. The end goal here is a high level of fluency in JavaScript so that we are better able to write clean code.

In this chapter we're going to cover the following topics:

Expressions, statements, and blocks
Scopes and declarations

Table of Contents for Parts of Syntax and Scope

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Table of Contents for
Parts of Syntax and Scope