This topic always tickles the pedantic part of my brain. If I may assume that the reader would agree that JS is a programming language, what makes it a programming language and not HTML? What makes a static .js file a program and a static .html file not a program?
Generally speaking, HTML doesn't have the constructs necessary to actually compute things. There's no way to declare variables, and there are no conditionals, jumping, or mathematical operations. All you can do is specify a fixed set of page elements.
Embedded JS within HTML doesn't count here, as that's essentially no different than a linked script file.
To be fair, there are some exceptions to this; there are some very hacky and convoluted ways you might be able to get some programmatic behavior out of pure HTML (I remember hearing about a weird example in part of Wikipedia's codebase).
HTML literally means hypertext markup language. It's more like TeX or Markdown, in that it's used to store and represent data, not to manipulate it.
> All you can do is specify a fixed set of page elements.
I'm not denying this but rather questioning why this means the document which specifies this is not a program. The previous sentences describe why it's not Turing-complete, which is moot to whether it's a programming language.
> HTML literally means hypertext markup language. It's more like TeX or Markdown, in that it's used to store and represent data, not to manipulate it.
I disagree that HTML is not used to manipulate data. Unless you mean to say that it doesn't manipulate it directly but I think that's also moot. My day job is to use HTML to build forms that are used to accept user input for data manipulations. It seems to me that I'm programming the browser to render the correct form and the language I'm using for the programming is HTML.
Besides, being used only to store and represent data does not seem to necessarily preclude it being a programming language. "Program" is a word that's used to describe a presentation of some kind. A wind ensemble might perform a "program" of pieces on concert night.
Well, if you'll pardon the tautology, it's a language that's used for precisely expressing programs. Of course, that just shifts the question. What's a program?
It's a set of instructions for a computer to execute. Hopefully that's not controversial. But isn't `<input type="text">` an instruction to render a text input?
It is "controversial" because it's way too vague, which the pedant part should recognize (is a mouse click not an instruction for a computer to execute?), so of course you won't be able to differentiate at this level.
Why is that a better descriptor? I don't understand this desire to demarcate between programming languages and whatever a "syntax" language is. All languages have syntax, even natural languages - it's one of the terms we've borrowed from linguists.
HTML is one of the languages I use when I am programming. In the sense, I really struggle to see the argument that it isn't a programming language, unless someone is using a very precise definition of "programming language" that I'm not privy to. There's a bunch of well-defined stuff it _isn't_ (e.g. Turing-complete), and a bunch of well-defined stuff that it is (e.g. declarative, or a markup language), but as far as I can tell there's no better definition of "programming language" than "language used for programming", and it certainly seems to fit that bill.
I've seen HTML and CSS being denied status as a programming language many, many times. It is a signal that the person making the claim hasn't encountered one of these debates before.
Yes, it is a programming language. And so is HTML, LaTeX, heck even Markup is a programming language. The shapes of discs you put into your 1950s Elna Supermatic sewing machine that alters the stitch, also a programing language.
The only requirements is that it compiles into a set of instructions which computers (or sewing machines, etc.) know how to read and execute into a predictable (preferably desired) outcome.
A programming language does not need to be Turing complete to be a programming language.
Pidgen is a type of language, too, but you wouldn't be writing Shakespeare in it.
There's nothing to be pedantic about HTML here, and it just seems so absolutely pointless to me that people try to find a way to be.