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: 
I tend to agree with this author's rationale [expressed in his comment in a discussion on this subject:](https://stackoverflow.com/questions/30896297/onclick-function-in-javascript/30896696#30896696)

> 
> The only person here that should have issues with my answer is the poster then. Not you. I told him/her how to do it in vanilla and offered a much simpler way using jQuery. The poster can decide if he wants to use it or not.
> 
> 
> 

JavaScript questions never *require* jQuery; C++ questions never *require* Boost, and I suppose it may even be possible to answer Perl questions without referencing something on CPAN. That said, there are many, many questions where the use of a tool or library makes the solution considerably easier or less error-prone; if we could not have answers that demonstrated this, the site would be much poorer.
Sometimes it can be hard to make grand statements about how much jQuery to use. None? Martijn's classic link depicting "needs more jQuery"?

I think each instance is kind of different and here is my take on this one.

Based on looking at this user's past history of posts they are attempting to integrate jQuery but do not really understand it very much, if at all. As a result, they tagged this question with jQuery hoping that perhaps someone would offer a solution including it so they can see how it would be used as opposed to how it would be done without using a library (plain javascript).

I think answering with jQuery is applicable in this situation, although it is definitely not acceptable to answer with jQuery when the tag is not present. I also thing that removing the tag could change the original poster's intent.