Clean Code in JavaScript

Consistency and hierarchy

So far, we've talked about the three most important characteristics of a name: purpose, concept, and contract. One of the easiest ways to bestow these characteristics upon your names is to use consistency and hierarchy to your benefit. Consistency here refers to using the same pattern of naming across many different names within a given area of code. Hierarchy, on the other hand, refers to the way we structure and put together different areas of code to form a holistic architecture. Together, they allow us to give a name a rich context that can be used to make strong inferences about its purpose, concept, and contract.

This is best explained by looking at the JavaScript directory of a fictional app. We have a directory ...