[whatwg] Navigation events generated during unload
Ian Hickson
ian at hixie.ch
Sat Oct 17 02:12:48 PDT 2009
On Tue, 13 Oct 2009, Boris Zbarsky wrote:
> On 10/13/09 10:58 PM, Ian Hickson wrote:
> > Ah, I see. Yes, that makes sense. Are you ok with what the spec says
> > despite this minor difference? (It seems that what the spec says is a
> > mote more self-consistent, but I could be biased! ;-) )
>
> Can you point me to the relevant spec text?
Sure.
The 'beforeunload' and 'unload' events are described in algorithsm here:
http://www.whatwg.org/specs/web-apps/current-work/multipage/#unloading-documents
If you click the "prompt to unload the document" and "unload a document"
bits you'll get links to the algorithsm that use them. In particular, the
"navigate" algorithm:
http://www.whatwg.org/specs/web-apps/current-work/complete.html#navigate
Step 3 is the one that prevents a browsing context from being navigated
while 'unload' is running.
Step 8 is the one that runs 'beforeunload'.
Step 17 references algorithms that each later reference the "update the
session history with the new page" algorithm:
http://www.whatwg.org/specs/web-apps/current-work/complete.html#update-the-session-history-with-the-new-page
Step 1 of that algorithm invokes 'unload'.
Sorry for linking to complete.html; the multipage copy is currently
undergoing maintenance as I write this. If you replace "complete.html"
with "multipage/" then you will get redirected to the multipage version.
HTH,
--
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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