Question: Going off this question [here](https://stackoverflow.com/questions/26537486/radio-button-clears-text-boxes)...

Is it ok to give a jQuery answer if the OP has tagged jQuery, but does not use it in their code? It screams "mis-tag" to me, versus "gimme dat jQuery".

More or less, should jQuery answers be valid on a mis-tagged question?

(I use the term valid loosely here, as technically all answers that aren't spam or off topic are valid)

Answer: 
To me it depends on the question. If the question is

> 
> "How do I do X in JavaScript"
> 
> 
> 

where X is something that's not really doable in regular javascript, but has a reasonably simple solution in jQuery, then it seems like it's a fine thing to answer with a jQuery answer regardless of whether it's tagged that way or not. The asker may or may not use jQuery, it may or may not help the asker, but it's a reasonable answer. jQuery may have a bit of a bad rep here, but to me it's like answering an [r](https://stackoverflow.com/questions/tagged/r "show questions tagged 'r'") question suggesting to use `dplyr`; it's a valid solution that could help the asker or later searchers. I'd upvote a non-jQuery solution over a jQuery solution to a question that didn't specify jQuery if it were reasonably simple to implement, but I have no problem upvoting the jQuery answer if it's much simpler.

If the question is not that, though, but is more about how JavaScript works, then a jQuery answer should only be valid if the question seems like it really does use jQuery. If it is entirely pure JavaScript and doesn't have any jQuery dependencies, then it should be answered as JavaScript and the [jquery](https://stackoverflow.com/questions/tagged/jquery "show questions tagged 'jquery'") should be removed.
If you feel that the answer isn't helpful, you're more than welcome to downvote it. If others feel that it is a helpful answer, despite using a tool not mentioned in the question, they may upvote it. Everyone is free to provide the feedback they feel is most appropriate.

Your first comment certainly isn't inappropriate. Indicating that the answer is problematic because the question doesn't mentoin the tool used is certainly feedback you can choose to provide.

The answerer's reply of "can't you read" is starting to push the bounds of being constructive. I could certainly see it meriting deletion by a mod.

When you reply with "Are you stupid" we've now clearly devolved completely past the point of constructive discussion and into childish name calling, and nothing productive is likely to be accomplished at this point forward. Had you removed that inappropriate name calling from the comment it could potentially have had value; if you had been able to clearly and *constructively* explain why you feel the answer is problematic, then either the author could use that feedback to improve their answer, or other readers can use that information to judge its quality. But when you open with personal insults, the odds of anyone actually reading/discussing anything after it constructively tend towards zero.