W3C home > Mailing lists > Public > public-web-perf@w3.org > June 2011

Re: Further concerns with PageVisibility

From: Kyle Simpson <getify@gmail.com>
Date: Wed, 15 Jun 2011 12:43:11 -0500
Message-ID: <48630744F26D490C8146DAC706251380@spartacus>
To: "Sreeram Ramachandran" <sreeram@google.com>
Cc: <public-web-perf@w3.org>
> Such "rendering before being visible" already happens today. Users can
> and do often open links in background tabs (for example through a
> middle-mouse-button click).

Major distinction: the user is choosing to express that they don't care, as 
opposed to the the browser (Chrome) assuming they don't care.

If I have some stuff I want to show to users, and *they* say they don't care 
(by opening my page in the background tab), I'm ok with that. If the browser 
gets to decide that my stuff is unimportant to show to the user, I'm very 
not-OK with that. Which means I have to now care about delaying such code 
for PageVisibility.

Moreover, if pages start doing that (delaying stuff for PV) widespread, it 
will actually eliminate a user's implicit choice (which they currently have) 
to have such "this site is loading" stuff (which they don't care about) 
happen while the tab is in the background.


Received on Wednesday, 15 June 2011 17:44:59 UTC

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