>> What's the issue with document.createElement('object')? > It's a callable exotic object.
>> Function.isFunction? :D > typeof is what you are looking for. There is precedent (at least in IE [1]) for exotic functions where `typeof` returned "unknown". Could happen for any exotic value unless the spec changed on that. An `isFunction`, or rather, a simple `isCallable`, may not be that far off the mark and is in line with the existing `isArray`. Though I'd much rather have callables invariantly locked down to being "typeof function". Even if that means explicit exceptions to some legacy cases. - peter PS. Regexes in firefox were "callable" and had typeof function, but I think that's so far back [2] it's not super relevant here. Of course the same could be said about the IE case. [1]; one of many examples: http://stackoverflow.com/questions/10982739/typeof-returning-unknown-in-ie [2]; https://bugzilla.mozilla.org/show_bug.cgi?id=61911 _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss