There are broadly three types of syntactic container that exist within JavaScript: expressions, statements, and blocks. They are all containers in that they all hold other pieces of syntax and all have distinct behaviors that are worth distinguishing.
There are additional constructs that you can call containers, such as functions or modules, but for now we're only interested in the types of syntax that you would find within these. As we continue to explore the language, we are slowly zooming out all the way from granular operators and expressions to the much larger and more complex functions and programs in which they reside.
It's best to visualize the individual syntactic parts of a program as a hierarchy:
Here, we can see that individual expressions (with a lower border) are wrapped in statements, either of the regular or block...
