Your comment was really not clear to me at all, so I think I’m missing something. Where is the context switch here? To me, context switching is about changing

Your comment was really not clear to me at all, so I think I’m missing something. Where is the context switch here? To me, context switching is about changing what I’m currently looking at on the screen and going somewhere else to define something in some other context: a different source file, a different system, a config file, etc. If you’re continually leaving the context of the HTML that will render your data in order to manipulate that data, that sounds like a different problem that can easily be solved by using mock data or by hooking up to a real data source. This is true regardless of CSS approach.