What? That would just cause the event handler function to return a generator 
object, which the browser would not use or do anything with. It would have no 
effect.


________________________________
From: es-discuss <[email protected]> on behalf of Andrea 
Giammarchi <[email protected]>
Sent: Wednesday, January 08, 2014 15:50
To: [email protected]
Subject: generators inside DOM events

I am not sure this has been discussed already but I wonder what would happen if 
`yield` is used inside an event such 'beforeunload', 'unload', or even 'click' 
and others DOM related events.

Main concerns:

  1.  it's a UA trap potentially making impossible to leave a page or complete 
a user meant action
  2.  not even transpilers can solve cases like this (i.e. a still valid event 
eventually stopped after some generator logic where if simulated the event 
would be expired at the time the function will be invoked)

Thanks
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