- From: Boris Zbarsky <bzbarsky@MIT.EDU>
- Date: Sun, 12 Aug 2012 13:10:17 -0400
- To: Allen Wirfs-Brock <allen@wirfs-brock.com>
- CC: Cameron McCormack <cam@mcc.id.au>, Brendan Eich <brendan@mozilla.com>, public-script-coord@w3.org, es-discuss@mozilla.org
On 8/11/12 10:17 PM, Allen Wirfs-Brock wrote: > Requirements on the global object are specified here: > http://ecma-international.org/ecma-262/5.1/#sec-15.1 It says that the > value [[Prototype]] is implementation defined, but in practice in needs > to inherit from Object.prototype. So, Object.prototype seems like a > strong candidate for being the actual [[Prototype]] value. That's a non-starter because the global is [NamedPropertiesObject], so at the very least that object (the global scope polluter) needs to live on the proto chain somewhere below Object.prototype. > Do onload and friends need to even exist as global object properties if > they haven't been explicitly set? Yes. It's common for pages to do object-detection for particular events existing in an implementation by checking for the existence of the relevant on* in window. In fact, that's why Gecko switched behavior here, now that you remind me! See https://bugzilla.mozilla.org/show_bug.cgi?id=659350 and https://bugzilla.mozilla.org/show_bug.cgi?id=414853 and the numerous duplicates of the latter. -Boris
Received on Sunday, 12 August 2012 17:10:49 UTC