W3C home > Mailing lists > Public > public-web-perf@w3.org > June 2013

Re: [ResourcePriorities] Only specify lazyload on img

From: Simon Pieters <simonp@opera.com>
Date: Wed, 26 Jun 2013 01:23:34 +0200
To: "Jonas Sicking" <jonas@sicking.cc>
Cc: "James Simonsen" <simonjam@google.com>, public-web-perf <public-web-perf@w3.org>
Message-ID: <op.wy9clku3idj3kv@simons-macbook-pro.local>
On Wed, 26 Jun 2013 00:54:50 +0200, Jonas Sicking <jonas@sicking.cc> wrote:

> More than anything I would be worried about breaking author expectation.
>
> I would also imagine that there are use cases both for "load this
> script and execute it as soon as possible, but don't block parsing"
> and "load this script and execute as soon as possible, but don't block
> the load event".

Yeah.

>> I'm not sure the spec requires async to begin loading immediately.
>
> When else would you load it? What information does the browser have
> available to make discretionary decisions?

The browser could decide to give e.g. stylesheets higher priority than  
async scripts, or some such.

-- 
Simon Pieters
Opera Software
Received on Tuesday, 25 June 2013 23:21:55 UTC

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