How to fix resize?

Question

JavaScript

on a small screen I opened a submenu
, then I return to the desktop - and lags (if you open or close the submenu)
and it should not be shown on the desktop (submenu)

at all if you do not play with sizes - then everything is ok

in this case> 1050 - desktop

https://jsfiddle .net/43ksqxa0/

Answer 1

The matter is that each time when there is a change of a window, the new handler of events is hung up. Here, look how I did it.