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Re: [webcomponents]: First stab at the Web Components spec

From: Anne van Kesteren <annevk@annevk.nl>
Date: Tue, 12 Mar 2013 10:46:34 +0000
Message-ID: <CADnb78guHajphpq_4z-T4cFTNaePcWzXYnLc__Jo4YER3Qow2A@mail.gmail.com>
To: Dimitri Glazkov <dglazkov@google.com>
Cc: public-webapps <public-webapps@w3.org>
On Mon, Mar 11, 2013 at 8:00 PM, Dimitri Glazkov <dglazkov@google.com> wrote:
> The resources will only block script (just like CSS:
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=21218), so there's definitely
> opportunity for parallelism.

Blocking script for CSS is seen as a large pita and I've heard
requests for ways to prevent that (e.g. with <link rel=stylesheet
async>). Expanding the set of external resources that does that does
not seem like a great idea to me.

> I am not sure how the message port thing will work.

Never mind that suggestion. We can't have an async DOM (yet).

> b) making sub-resources not block on script sort of ruins my plan for
> integrating <element> registration. If there's no blocking script, I have no
> assurances that the <element>s in subresources are registered before script
> starts running, which means that we'll have to do something like element
> upgrade, which I worked pretty hard to remove :)

I recommend discussing this with the HTML parser crowd and performance
crowd. I would've thought we would not want to repeat mistakes made in
the past.

Received on Tuesday, 12 March 2013 10:47:02 UTC

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