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Hey Jose, sorry for the late reply.
There are a ton of different methods for prepending/appending, and unfortunately the best answer to your question about performance is “it depends.” The point I was really trying to make was that, regardless of what kind of element you’re appending, it’s much more performant to append them all at once rather than appending one element in each iteration of the loop.
I read a fantastic article about this recently that I’m trying to dig up again, it did a bunch of performance testing of various ways of appending using loops (both native for loops and jQuery $.each) and by far the best way was pushing content into an array in each iteration and then using that array to build the appended content after the loop was finished. If I can find it again I’ll post it here. Thanks for the question!