> When I choose a language for examples in my writing, I think primarily of the reader. I picked Java because I felt the most people would be able to understand the code examples if they were written in Java. That was the case in 1997, but how about in 2017? [...] Such a language needed to be widely popular, among the top half a dozen in language popularity surveys. It really helps to have a C-based syntax, since most programmers would recognize the basic code structure. Given that, two stood out. One was Java, still widely used and easy to understand. But I went for the alternative: __JavaScript__. [...] But the compelling reason for choosing it over Java is that isn't wholly centered on classes. There are top-level functions, and use of first-class functions is common. This makes it much easier to show refactoring out of the context of classes.

This is very interesting choice of language. I wonder whether typescript could have been a candidate as well. Although not as popular as JS, I believe most of JS community has migrated to typescript (due to obvious benefits) and it is more closer to a C-based language.