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JavaScript

Posted by Adam Holt
Adam Holt
3,028 Points

Does rounding here reduce workload?

I picked up a code snippet online somewhere that has a function

$(window).on('scroll', function() {

   // round to reduce workload
   scrollXPos = Math.round($(window).scrollTop() / 10) * 10;

the comment says this reduces the workload. I can't see how? I thought it was actually creating more workload because it has to round the number every time? Or does this mean that the workload is reduced because the code following this line isn't executed as often?

is there a way to reduce the workload of the window scroll function?