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Re: Executing script-inserted external scripts in insertion order

From: Adam Barth <w3c@adambarth.com>
Date: Tue, 2 Nov 2010 11:43:47 -0700
Message-ID: <AANLkTinp_op_BO7aAf5JGATmE=fXMhXoYFrGCjN-zVto@mail.gmail.com>
To: Henri Sivonen <hsivonen@iki.fi>
Cc: Tony Gentilcore <tonyg@google.com>, Getify <getify@gmail.com>, public html <public-html@w3.org>
On Tue, Nov 2, 2010 at 6:48 AM, Henri Sivonen <hsivonen@iki.fi> wrote:
> On Oct 30, 2010, at 02:38, Tony Gentilcore wrote:
>
>> Nice writeup! The .async=false proposal you outline in the wiki looks great to me. I'm happy to put together a WebKit patch if we settle on it and there's a bug for Hixie to update the spec.
>
> FWIW, the Gecko patch that up for review has the following behavior for .async in spec-ese:
>
> When a script element node is created, if it is being flagged as parser-inserted, set its force-async flag to false. Otherwise, set its force-async flag to true. (Note that createContextualFragment, innerHTML and XSLTProcessor::transformToFragment-created scripts are not flagged as parser-inserted.) This flag setting happens before any attributes are set on the node.
>
> When a previously-created script element node loses its parser-insertedness, if the element doesn't have the async content attribute, set the force-async flag to true and false otherwise.
>
> When a script element node obtains the async content attribute (via setAttribute, setAttributeNode, setAttributeNS, by the fragment parsing algorithm or the XSLTProcessor adding the attribute, etc.), set the force-async flag to false. (Note that calling removeAttribute("async") doesn't modify the force-async flag.)
>
> The async IDL attribute must behave as follows:
>  * Upon setting, set the force-async flag to false and then reflect the async content attribute.
>  * Upon getting, if the force-async flag is true, return true. Otherwise, reflect the async content attribute.

^^^^^^^^^^^^^^^ This is the part that makes me sad.

> (And the "run" algorithm for scripts is extended with an additional case for scripts that are external, aren't flagged as parser-inserted and that have the async DOM property reporting false.)
>
> --
> Henri Sivonen
> hsivonen@iki.fi
> http://hsivonen.iki.fi/
>
>
>
>
Received on Tuesday, 2 November 2010 18:44:56 UTC

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