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 _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
