3 ms·
> how much slower querySelector is compared to old school getElementByid, getElementsByClassName IE 8 got querySelector before IE 9 got getElementsByClassName,
by minitech 6y ago
> how much slower querySelector is compared to old school getElementByid, getElementsByClassName
IE 8 got querySelector before IE 9 got getElementsByClassName, so it’s not really an old vs. new thing, and I don’t think anyone expects querySelector to be faster than getElementById.