On Thu, Apr 7, 2011 at 10:54, Maciej Stachowiak <[email protected]> wrote: > Is there data on: > - The user impact of modal dialogs being fired from before unload, unload or > page hide - how often does this happen? > - The Web compatibility impact of removing this functionality (are the sites > that do it using it for seemingly legitimate reasons)?
Sorry, I don't have any data at the moment (actually, I don't even have any examples). > I can think of two ways to gather the data: > 1) Add some form of opt-in tracking to see how often users hit a modal dialog > during an unload event, and sites where this is done, so we could determine > if it causes breakage. We can collect aggregate stats from Chromium, but our privacy policy won't let us collect specific URLs or sites. So, even if we found that a very small percentage of users are affected by this, we won't be able to tell which sites they were on, or whether the dialogs were necessary or annoying. > 2) Run automated Web crawlers to find this out. I'll try, but static analysis of js is hard/impossible; but perhaps I'll be able to find at least a couple of examples. > Since we have a potential tradeoff between Web compatibility and usability, > it would be good to get some data so that we can weigh the tradeoff. > > Side note: when I see a dialog upon leaving a webpage, it is almost always > the beforeunload dialog. I'm not sure I have ever seen a regular alert, > prompt, confirm, or showModalDialog when leaving the page. This is part of > why I'd like to see data. Would we be solving a real problem with this > change, or just a theoretical one? As agreed on #webkit, we'll proceed by enabling this in chromium and collecting some aggregate stats (for whatever that's worth), relying on bug reports to find any specific issues that arise. _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
