On Thu, Jul 9, 2015 at 6:40 PM, Boris Zbarsky <bzbar...@mit.edu> wrote: > On 7/9/15 8:42 AM, Philip Jägenstedt wrote: >> >> Would there be any way to feature detect support for EventListenerOptions >> as the third >> argument? > > > Yes. You call addEventListener and pass an object that has getters for the > properties you care about detecting. If those getters get invoked, the > browser knows about those dictionary properties.
Ah, that's cool :) Philip
