On Aug 12, 2008, at 8:31 AM, Travis Leithead wrote:
Cameron,
I recently became aware of Microsoft's involvement in the ECMAScript
3.1 effort as of about a month ago. (Including Allen & Pratap from
MS Jscript, who are driving that effort.) ES3.1 makes a few subtle
changes that I thought you'd like to follow up on, since they impact
the WebIDL spec, namely "DontDelete" is changing to "Flexible",
among other things which should be noted in WebIDL.
I've also done some recent investigation on how browsers handle
ECMAScript's operators (delete, new, instanceof, etc.) and found
that they are somewhat diverging in implementation; in particular
the 'delete' operator. I've noted that some implementations use the
delete operator in the DOM in the same spirit that it is speced in
ECMAScript--that is the delete operator removes a given property
completely. I've noted that other implementations only allow the
delete operator to remove a "shadowed" property on the DOM, but
never actual delete the underlying "built-in" property. I wondered
if WebIDL makes any mention of the behavior of ECMAScript operators
on host objects and how they should behave?
Since ECMAScript 3.0 is still the operative standard and the future
plans for ECMAScript have been unclear and may change markedly in the
future, I would advise against making this change at present.
Regards,
Maciej
