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working bfcache example?
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Brad Kent
Dec 12, 2011, 10:39:49 AM12/12/11
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I have a basic question regarding Firefox's "bfcache".
Should FF's back/forward behavior still work as described here:?
https://developer.mozilla.org/en/using_firefox_1.5_caching
(the page is 6 years old? - perhaps things have changed)
Recently I've been trying to figure out how to get the back-button to work when going back to a page where the dom has been modified (ie, the page should be as the user left it). Specifically a form where fields have been revealed/modified based on values of other fields.. common stuff.
My searches lead me to bfcache and the understanding that it should "just work" (assuming no "no-store" / "no-cache" headers... or unload handlers are used, etc). The thing is, I can't find a page/site where bfcache works as described. It seems the page is always redrawn and the onload event is always fired.
I've created a most basic page to test bfcache (no external javascript, images, stylesheets)
http://www.bradkent.com/test/bfcache.html
The page captures 3 events: load, pageshow, & focus
each event handler appends a "debug" div to the body
When using the back/forward button to return to the page: page is always redrawn & onload is always fired...the page is not as it was left... further, pageshow's persist property is always fals.
It doesn't matter whether I load the page via http:// or file:// (I assume that would rule out any caching headers issue)
I must be doing something wrong??
I'm using Firefox 8
Should FF's back/forward behavior still work as described here:?
https://developer.mozilla.org/en/using_firefox_1.5_caching
(the page is 6 years old? - perhaps things have changed)
Recently I've been trying to figure out how to get the back-button to work when going back to a page where the dom has been modified (ie, the page should be as the user left it). Specifically a form where fields have been revealed/modified based on values of other fields.. common stuff.
My searches lead me to bfcache and the understanding that it should "just work" (assuming no "no-store" / "no-cache" headers... or unload handlers are used, etc). The thing is, I can't find a page/site where bfcache works as described. It seems the page is always redrawn and the onload event is always fired.
I've created a most basic page to test bfcache (no external javascript, images, stylesheets)
http://www.bradkent.com/test/bfcache.html
The page captures 3 events: load, pageshow, & focus
each event handler appends a "debug" div to the body
When using the back/forward button to return to the page: page is always redrawn & onload is always fired...the page is not as it was left... further, pageshow's persist property is always fals.
It doesn't matter whether I load the page via http:// or file:// (I assume that would rule out any caching headers issue)
I must be doing something wrong??
I'm using Firefox 8
Martijn
Dec 12, 2011, 11:10:46 AM12/12/11
to mozilla.de...@googlegroups.com, dev-pl...@lists.mozilla.org
Iirc, as soon as you listen for the 'pageshow' event, bfcache is turned off.
Regards,
Martijn
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Regards,
Martijn
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> dev-pl...@lists.mozilla.org
> https://lists.mozilla.org/listinfo/dev-platform
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Martijn Wargers - Help Mozilla!
http://quality.mozilla.org/
http://wiki.mozilla.org/Mozilla_QA_Community
irc://irc.mozilla.org/qa - /nick mw22
Boris Zbarsky
Dec 12, 2011, 11:26:04 AM12/12/11
to
On 12/12/11 10:39 AM, Brad Kent wrote:
> I've created a most basic page to test bfcache (no external javascript, images, stylesheets)
> http://www.bradkent.com/test/bfcache.html
On that page, if I click the link and then hit the back button, I see
> I've created a most basic page to test bfcache (no external javascript, images, stylesheets)
> http://www.bradkent.com/test/bfcache.html
the DOM as it was when I left and "evt.persisted: true".
> I must be doing something wrong??
-Boris
Boris Zbarsky
Dec 12, 2011, 11:27:28 AM12/12/11
to
On 12/12/11 11:10 AM, Martijn wrote:
> Iirc, as soon as you listen for the 'pageshow' event, bfcache is turned off..
Not at all. That would completely defeat the purpose of having a
pageshow event!
The event listeners that turn off bfcache are unload and beforeunload.
-Boris
> Iirc, as soon as you listen for the 'pageshow' event, bfcache is turned off..
Not at all. That would completely defeat the purpose of having a
pageshow event!
The event listeners that turn off bfcache are unload and beforeunload.
-Boris
Brad Kent
Dec 12, 2011, 12:15:30 PM12/12/11
to
It turns out, LastPass is breaking bfcache
https://addons.mozilla.org/en-US/firefox/addon/lastpass-password-manager/
ugh
Boris Zbarsky
Dec 12, 2011, 12:21:16 PM12/12/11
to
On 12/12/11 12:15 PM, Brad Kent wrote:
> It turns out, LastPass is breaking bfcache
> https://addons.mozilla.org/en-US/firefox/addon/lastpass-password-manager/
Report the bug to them?
> It turns out, LastPass is breaking bfcache
> https://addons.mozilla.org/en-US/firefox/addon/lastpass-password-manager/
-Boris
Asa Dotzler
Dec 12, 2011, 1:56:53 PM12/12/11
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https://bugzilla.mozilla.org/show_bug.cgi?id=674535
- A
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