Why do web developers typically include comments in their code?

Web developers include comments in their code primarily to explain the purpose of code sections to other developers. Comments serve as a form of documentation within the code itself, making it easier for someone else (or even the original developer at a later date) to understand what a specific piece of code is intended to do. This practice fosters collaboration and maintenance, as it elucidates the logic, functionality, and intent behind complex or non-obvious sections.

Well-placed comments can clarify the code's purpose, outline any specific usage notes, and identify potential pitfalls that might not be immediately obvious. This becomes especially important in larger projects where multiple developers may work on the same codebase, as it enhances readability and helps maintain a consistent coding standard.

Other options, such as reducing file size, improving load time, or securing code against hacking, do not accurately represent the primary purpose of comments. While comments may have various indirect effects, such as possibly aiding in development efficiency, their fundamental role is to convey information and facilitate understanding among developers.