Thanks, T & Tino, for the tips and links on timeouts. The virtual List you
mention sounds interesting, but the demo link below only shows the demo but
no code, and I didn't see it in the API. Is there a code link available?
Ken
On Fri, Nov 12, 2010 at 12:36 PM, Tino Butz <[email protected]> wrote:
> Hi,
>
> Thomas is right. You should process only some ListItems and than add an
> timeout, e.g.:
>
> window.setTimeout(function() {
> goOnProcessing(currentIndex);
> },0);
>
> IE shows a long running script warning, when too much statements were
> executed. You can find more information on this subject in the following
> article:
>
>
> http://www.nczonline.net/blog/2009/01/05/what-determines-that-a-script-is-long-running/
>
> I would recommend that you use a virtual list and only render the items in
> the current viewport:
>
>
> http://demo.qooxdoo.org/current/demobrowser/demo/virtual/List.html?qx.theme=qx.theme.Modern
>
> Best regards,
> Tino
>
>
>
>
> http://www.nczonline.net/blog/2009/01/05/what-determines-that-a-script-is-long-running/
>
> Am 12.11.2010 um 18:15 schrieb thron7:
>
> > i know there are people with much more ie experience on the list. but to
> > me it sounds like incremental update and giving some breath to the
> > browser through setTimeout-style programming could be the cure.
> >
> > i recommend you to the Progressive widget in the framework. run this in
> > your ie and see how it feels:
> >
> >
> http://demo.qooxdoo.org/current/demobrowser/index.html#progressive~ProgressiveLoader.html<http://demo.qooxdoo.org/current/demobrowser/index.html#progressive%7EProgressiveLoader.html>
> >
> > t.
> >
> > On 11/12/2010 05:53 PM, Ken MacDonald wrote:
> >> We have to support IE for customers, and frequently we get this
> >> complaint box where IE thinks the .js is probably caught in an endless
> >> loop and asks the user if they want to kill the script or continue.
> >> Well, we're aren't stuck, it's just that IE's js engine is about 8-10x
> >> slower than Firefox. I'm looking for some way to reduce or eliminate
> >> this. Suggestions welcome!
> >>
> >> In one particularly bothersome case, we do a big DB query and then
> >> process a display out of the results. The query comes back within a
> >> second or so, then IE takes about 20 seconds to render the display of
> >> the info (Firefox - 2 seconds). The display contains on average 20 Lists
> >> arranged in a Grid, a couple labels and buttons, and perhaps 900
> >> ListItems divided between the Lists.
> >>
> >> A couple of things I've considered:
> >> 1) Use Tables instead of Lists for the display - anyone have a feel for
> >> whether the rendering would go more quickly?
> >>
> >> 2) Is there any way to let good ol' IE know that we are still alive,
> >> maybe some kind of signal that I could fire every 50 ListItems or so?
> >>
> >> 3) Similar to 2, is there a way to force the page to display, perhaps
> >> after each List is filled - maybe that would convince IE that we haven't
> >> died on it? (Actually, the Lists are all "collapsed" until they are are
> >> filled, then I make them visible - if I made them visible through the
> >> whole process, would that help?)
> >>
> >> 4) Once this thing is rendered and displayed, if I hit the IE 'refresh'
> >> button, I get the "script running slowly" prompt again! Apparently the
> >> page teardown and garbage collection is too slow for it as well. I have
> >> no idea how to fix that.
> >>
> >> Thanks for any ideas!
> >> Ken
> >>
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >> Centralized Desktop Delivery: Dell and VMware Reference Architecture
> >> Simplifying enterprise desktop deployment and management using
> >> Dell EqualLogic storage and VMware View: A highly scalable, end-to-end
> >> client virtualization framework. Read more!
> >> http://p.sf.net/sfu/dell-eql-dev2dev
> >>
> >>
> >>
> >> _______________________________________________
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> >> [email protected]
> >> https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
> >
> >
> ------------------------------------------------------------------------------
> > Centralized Desktop Delivery: Dell and VMware Reference Architecture
> > Simplifying enterprise desktop deployment and management using
> > Dell EqualLogic storage and VMware View: A highly scalable, end-to-end
> > client virtualization framework. Read more!
> > http://p.sf.net/sfu/dell-eql-dev2dev
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> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
>
>
>
> ------------------------------------------------------------------------------
> Centralized Desktop Delivery: Dell and VMware Reference Architecture
> Simplifying enterprise desktop deployment and management using
> Dell EqualLogic storage and VMware View: A highly scalable, end-to-end
> client virtualization framework. Read more!
> http://p.sf.net/sfu/dell-eql-dev2dev
> _______________________________________________
> qooxdoo-devel mailing list
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>
------------------------------------------------------------------------------
Centralized Desktop Delivery: Dell and VMware Reference Architecture
Simplifying enterprise desktop deployment and management using
Dell EqualLogic storage and VMware View: A highly scalable, end-to-end
client virtualization framework. Read more!
http://p.sf.net/sfu/dell-eql-dev2dev
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