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[Bug 9767] Consider ignoring document.write() when IE ignores it if comes from the network task source

From: <bugzilla@jessica.w3.org>
Date: Tue, 28 Sep 2010 09:54:12 +0000
To: public-html-bugzilla@w3.org
Message-Id: <E1P0Wt2-00032z-OZ@jessica.w3.org>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=9767

--- Comment #27 from Henri Sivonen <hsivonen@iki.fi> 2010-09-28 09:54:11 UTC ---
(In reply to comment #26)
> So basically the proposal is to change this step:
> 
>  8. If the element's Document has an active parser, and the parser's script
> nesting level is non-zero, but this script element does not have the
> "parser-inserted" flag set, the user agent must set the element's
> "ignore-destructive-writes" flag.
> 
> ...to:
> 
>  8. If the element has a "src" attribute, the user agent must set the element's
> "ignore-destructive-writes" flag.
> 
> ...? That seems reasonable. (I'll probably simplify how it's specified, if we
> do this, but the effect would be the same.) Can you confirm that that is what
> you mean?

That's not what I mean. I'm not suggesting elements to have an "ignore
destructive writes" flag. I'm suggesting that documents have an "ignore
destructive writes" counter. Furthermore, I'm not suggesting doing stuff at the
time of the "run" algorithm but at the time of script evaluation.

Under
http://www.whatwg.org/specs/web-apps/current-work/#executing-a-script-block

Change step 2 to:
If the script is from an external file, increment the
"ignore-destructive-writes" counter on the Document of the script element. Let
_neutralized doc_ be that Document.

Change step 4 to:
Decrement the "ignore-destructive-writes" counter of _neutralized doc_ if
_neutralized doc_ was defined in the earlier step.

Under http://www.whatwg.org/specs/web-apps/current-work/#dom-document-write

Change step 2 to:
If the insertion point is undefined and the Document has the
"ignore-destructive-writes" counter set to a non-zero value, then abort these
steps.
And then say somewhere that a Document initially has its
"ignore-destructive-writes" counter set to zero.

The solution described above has worked for multiple Firefox 4 betas. I really
don't want to tweak it at this point without a very, very strong reason.

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Received on Tuesday, 28 September 2010 09:54:14 GMT

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