Proving absolutely nothing whatsoever, since JavaScript is implemented in the browser, and not the OS, most certainly not the hardware.
Proving that a woman who knows more about computing than 99+% chooses to rely upon Apple hardware in a high-pressure situation. QED.
It's generally the case that smart folks prefer Apple hardware, be they live coders, Gulfstream-rich talkers, or NASA engineers baby-sitting a Mars lander (below).