javascript - Invert scrolling direction in browser -

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i tried using onwheel-event this:

event.preventdefault(); $('#mydiv').scrolltop -= event.deltay;

but there 2 issues code:

  1. it works in chrome in firefox scrolling unnatural (as far know firefox use smooth scrolling default , code breaks it)
  2. i want invert scrolling not mouse keyboard

added: not similar the question because want scrollbar move opposite direction.


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