David, This is awesome, thank you for taking the time to put this together. If I have any specific questions for you, should I ask them here (perhaps others would benefit) or should I email you directly?
Thanks again Rick -- Sent from my Palm Pre On May 13, 2011 5:09 AM, David Bruant <[email protected]> wrote: Le 13/05/2011 02:55, Rick Waldron a écrit : > David, > > For clarification, can you give a working example (ie runable in FF > nightly) of this: > > "Object.prototype.toString could return different > things for DOM objects. This can certainly be implemented in pure > ES.next with WeakMaps. " Sure. Here is an example of what I was thinking: https://gist.github.com/970223 I run it directly on the webconsole and it works like a charm (Tested on latest FF nightly on Windows 7 64bits) A couple of things to keep in mind: - I have no idea which DOM "classes" people expect and what particular values of [[Class]] are set for them. - I do not create objects respecting the DOM interfaces (it shouldn't make any difference, but tell me if you think it does) - My sole purpose was to prove feasbility. I am aware that the solution I show is suboptimal in several ways (especially the several redefinitions of Object.prototype.toString) - The same could have been achieved with arrays instead of weak maps, but would have led to memory leaks. - I assume the "environment setting" code to run in a fresh conforming ES environment (ES5.1 + current implicit consensus on WeakMaps) David
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