On Thu, Sep 17, 2009 at 2:11 PM, John Abd-El-Malek <[email protected]> wrote:
> On Thu, Sep 17, 2009 at 2:09 PM, Darin Fisher <[email protected]> wrote: > >> On Thu, Sep 17, 2009 at 12:52 PM, Maciej Stachowiak <[email protected]>wrote: >> >>> Based on your comments below, I think the expedient thing to do is to let >>> Image loads (only) complete their I/O when initiated from unload or >>> pagehide. >>> >> >> Why exclude beforeunload? Some of the sites we found use the busy loop >> hack in beforeunload. >> > > These sites presumably did it to split the sleep calls across as many > handlers as possible to avoid hung script detectors. If they rewrite their > pages to use one clean method, it seems they only need to do it in one > place. > There a plenty of sites that only have a beforeunload handler and have no reason to register an unload handler. If you're not prompting the user to stay on the page, the two events are essentially equivalent. Ojan
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