> I remember being laughed at when I told more experienced colleagues in 2004 that the only programming language I knew was JavaScript. I wasn’t a “real” programmer yet, according to them, because I hadn’t learned how to write assembly code. And they'd be right. You're not a real programmer until you understand how the machine functions. This is usually achieved by learning a low-level language like C, Pascal, Fortra…
As a rejoinder to the author, I would say that one can be a programmer and only know JavaScript, but one should not be a programmer and wish to only know JavaScript. Go ye forth and read some Wirth!