[Webkit-unassigned] [Bug 27611] New: document.__proto__ Behavior
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Jul 23 11:49:02 PDT 2009
https://bugs.webkit.org/show_bug.cgi?id=27611
Summary: document.__proto__ Behavior
Product: WebKit
Version: 528+ (Nightly build)
Platform: PC
OS/Version: Mac OS X 10.5
Status: UNCONFIRMED
Severity: Normal
Priority: P2
Component: JavaScriptCore
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: joepeck02 at gmail.com
Please read the comments on this bug report:
https://bugs.webkit.org/show_bug.cgi?id=27169
Note that I'm only concerned with the instanceof. The typeof doesn't seem to
be a major issue. Which behavior of instanceof do you think is correct?
Summary:
WebKit and Chrome:
> document.__proto__ instanceof window.Node
true
> document.__proto__.__proto__.__proto__ === Node.prototype
true
>typeof document.__proto__
"object"
Firefox:
> document.__proto__ instanceof window.Node
false
> document.__proto__.__proto__.__proto__ === Node.prototype
true
>typeof document.__proto__
"object"
Opera:
> document.__proto__ instanceof window.Node
false
> document.__proto__.__proto__.__proto__ === Node.prototype
ERROR
> typeof document.__proto__
"undefined"
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