It seems that there is: https://jsperf.com/isnan-performance/2 <https://jsperf.com/isnan-performance/2>
I did not see much difference between methods in terms of performance. > On Aug 3, 2017, at 4:30 PM, Harbs <harbs.li...@gmail.com> wrote: > > I wonder if there’s a difference between Flash and JS.