- From: Gavin Barraclough <barraclough@apple.com>
- Date: Thu, 12 Sep 2013 13:50:06 -0700
- To: Boris Zbarsky <bzbarsky@MIT.EDU>
- Cc: whatwg@lists.whatwg.org
On Sep 12, 2013, at 11:43 AM, Boris Zbarsky <bzbarsky@MIT.EDU> wrote: > On 9/12/13 2:36 PM, Gavin Barraclough wrote: >> Hmmm, interesting. I was thinking that in the case that a shadowing >> property was put to the named property object itself > > Can't be done. Looking at the ES5 [[Put]], ownDesc is a data descriptor here, so we land in step 3b, which calls [[DefineOwnProperty]], which is defined at http://dev.w3.org/2006/webapi/WebIDL/#named-properties-object-defineownpropertyand throws if "Throw" and silently does nothing otherwise. ES6 is similar. Ah, good point. Firefox, Safari, Chrome all currently all allow this, but seems reasonable to prohibit. cheers, G. >> then deleted > > Also can't be done. See http://dev.w3.org/2006/webapi/WebIDL/#named-properties-object-delete > >> Many thanks, > > No problem! > > -Boris
Received on Thursday, 12 September 2013 20:50:55 UTC