DOM nodes keeps increasing

hi. i am trying to understand why DOM nodes count is increasing constantly

i found this div to be reacting automatically in the background...

if i remove this event listener, i get this: the div gets filled with lots of texts... mainly this is midi device ports...

i am thinking why did this happen??
i searched for possible reasons for this dom to be created and found this. (it might help demystify..?)

if i let it run, the count goes crazy high like this...

😭

i dont understand why this is happening and how to fix... please help

my code may be the problem, but i want to know why it happened and how to avoid this problem...

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