On Thu, Jul 9, 2015 at 9:05 AM, James Ross <w3c-20040...@james-ross.co.uk> wrote:
> > Date: Thu, 9 Jul 2015 14:42:07 +0200 > > From: phil...@opera.com > > > > I think this looks like a very promising approach. Would there be any > > way to feature detect support for EventListenerOptions as the third > > argument? It seems like a problem that addEventListener(type, > > callback, { mayCancel: false }) would be treated as > > addEventListener(type, callback, true) in existing browsers. > > > http://rbyers.github.io/EventListenerOptions/EventListenerOptions.html#extensions-to-the-event-interface > and > > http://rbyers.github.io/EventListenerOptions/EventListenerOptions.html#examples > example > 2 are intended to cover this. > Right, thanks. What I've suggested is kind of weird though. Olli raises a good point <https://github.com/RByers/EventListenerOptions/issues/16> that we should discuss general dictionary-member feature detection patterns in the abstract before committing to something like this. I'd love other opinions / ideas on the bug <https://github.com/RByers/EventListenerOptions/issues/16>. > > > -- > James Ross <ja...@james-ross.co.uk> > >