How to remove looping in a script?

Question

JavaScript

There is a calendar library. Everything seemed to be debugged, but there is one strange bug - when switching to an event (when opening the date page), an unknown error occurs and a cycle begins that does not stop. It does not seem to affect the operation of the site, but the client most likely can hang the computer. How to fix a bug? Those. force the cycle to break or prevent it from occurring?
Page addresstyts For an error to occur, double-click on the event. Error occurs in IE 11

Answer 1

If the error is only in IE11, then the easiest way is to add a browser definition in IE11, for example, on the second click do return false. This is a risky option and rather clumsy. Not sure if it will work.
It is best to cancel the event cross-browser on the second click.