On Sun, Jun 26, 2011 at 13:19, Ryosuke Niwa <rn...@webkit.org> wrote: > On Sun, Jun 26, 2011 at 12:38 PM, Sreeram Ramachandran > <sree...@chromium.org> wrote: >> >> I did see a couple of confirm() calls in beforeunload. The examples I >> found were also annoying ("Are you sure you want to leave? Yes/No"), >> but I can imagine those could instead have been more useful ("Do you >> want to save some state? Yes/No"). I think if there are indeed such >> uses, they can be transformed into something that returns a non-NULL >> value in beforeunload and then saves state. > > "Do you want to save some state? Yes/No" seems like a valid use of confirm > because there are 3 possible actions users can take: > > Don't leave > Save state and leave > Discard state and leave
A confirm() can't actually do the first option ("Don't leave"). I believe there's nothing a page can do to prevent the navigation once it is in unload. The only way it can prevent it is by installing a beforeunload and returning a string. I do see that there can be potential uses for confirm and prompt during page dismissal. However, I haven't seen any such uses in my manual inspection; also, the number of such instances in the histograms is very tiny (orders of magnitude smaller than alert()). _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev