I recently flagged this post for being very low quality and just noticed it was declined. Could someone kindly shed some light as to why this would be? I mean, I thought it was pretty obvious that is was low quality. At the least, they could have provided working code instead of just the selector but even then, they should expand on it. Maybe provide a link to the documentation?
For what it's worth, I just deleted that answer because it was the same as a different answer on the same question but with less detail. I think it's fair to say that, regardless of quality, this sort of redundancy amounts to little more than noise. But this is a somewhat controversial opinion.
Very Low Quality is somewhat subjective. My usual guidance is that you should reserve this flag for posts that are clearly garbage - posts that aren't just wrong but are an outright embarrassment to everyone who sees them. Keep in mind that one person's opinion may differ from another's in this matter: if a moderator or other users view an answer as... Not great, but passable... Then your flag will be disputed or declined. If this happens occasionally, don't worry about it. If it happens often, consider that you might be better off just down-voting such posts: there's nothing wrong with the occasional example of what not to do floating around, and if the author decides he's tired of the down-votes he can always delete it himself.