(function foo(){}).propertyIsEnumerable("prototype"): true or false?

P T Withington ptw at pobox.com
Fri Sep 4 11:34:28 PDT 2009


On 2009-09-04, at 13:24, Brendan Eich wrote:

> I hope it doesn't break anything on the web. It could, because using  
> for-in to inspect properties and extend base objects with copies of  
> them is standard practice (Doug's "Swiss inheritance", search for  
> "Swiss" in http://www.cosmik.com/aa-october99/stan_freberg.html).

One small datapoint:  OpenLaszlo does not expect enumerability of  
function prototypes.  We learned by trial and error that browsers  
varied and work around that for both inspecting and extending.


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