i would think it's a basic handling of images by the browsers that is
probably further embedded than you are thinking.
perhaps try one of the old 'onmouseover' techniques
call the new image from the server into a new ID and then assign the new
image into the old image.
image1 = new Image
image1.src = 'myimagepage.php?image=updatedImage'
$('img_id').src = image1.src
image1.src=''
just a thought.
On 8/28/07, S <[EMAIL PROTECTED]> wrote:
>
>
> I will use Ajax.Request as my last resort later. Right now I'm still
> trying to use Ajax.PeriodicalUpdater to update the image from server
> every second. I need to update a status page that contains many text
> and images. Most of them need to be updated every second. I have
> existing codes that convert all data to an image file which can be
> loaded on web browser.
>
> The image is updated every second on the server. But, on the web
> browser the image seems to be cached as it's only uploaded once and
> never gets updated after. If I click on refresh or clear the cache on
> the web browser, the image will be updated. I added non-caching
> headers, tried it on IE, Firefox, and Opera with all caching and
> cookie options disabled, added random number behind the URL called by
> Ajax.PeriodicalUpdater, made the image really small and simple, ....
> nothing works. I wonder why Ajax.PeriodicalUpdater can't update image?
> I tested the function with text and it works perfectly fine. Is it
> browser or Ajax.PeriodicalUpdater issue?
>
>
>
>
> On Aug 28, 3:35 pm, "Nicolás Sanguinetti" <[EMAIL PROTECTED]> wrote:
> > for repeating execution you need setInterval, setTimeout only calls it
> > once, or better yet (at least if you need more control) use
> > Prototype's PeriodicalExecuter.
> >
> > -foca
> >
> > On 8/28/07, Diodeus <[EMAIL PROTECTED]> wrote:
> >
> >
> >
> >
> >
> > > Yes, in this case use
> Ajax.Request:http://www.prototypejs.org/api/ajax/request
> >
> > > ..then just use setTimeout to keep calling the function periodically.
> >
> > > On Aug 28, 1:12 pm, S <[EMAIL PROTECTED]> wrote:
> > > > Yes, I'm a newbie in using Ajax and I don't use javascript a lot
> > > > either ( I didn't even know what JSON was :P ). I was trying to save
> > > > the value returned byAjax.PeriodicalUpdater, which I realized later
> > > > that it's not gonna work. It only updates the value inside div
> > > > directly. In that case, I'm forced to go to a totally different
> > > > direction. Thanks Diodeus and Michael for your suggestions. I really
> > > > appreciate it :)
> >
> > > > On Aug 27, 3:30 pm, Diodeus <[EMAIL PROTECTED]> wrote:
> >
> > > > > While I generally use JSON myself, judging from the skill level of
> the
> > > > > original poster, I would expect JSON would be a bit of a leap.
> >
> > > > > On Aug 27, 3:17 pm, Michael Peters <[EMAIL PROTECTED]> wrote:
> >
> > > > > > Diodeus wrote:
> > > > > > > Create some sort of unique delimiter in your
> responsedatastring to
> > > > > > > separate the elements, such as "~".
> >
> > > > > > You could do that, but then you're limiting yourself (limiting
> yourself to just
> > > > > > arrays and whatdatacan be in those arrays). Why not just use
> JSON? Convert
> > > > > > your PHP structure (array or hash) into a JSON string and then
> send it over the
> > > > > > wire.
> >
> > > > > > > Then turn the string into an array using (use your own
> variable
> > > > > > > names):
> >
> > > > > > > mydata = myResponseText.Split('"~")
> >
> > > > > > > mydata[0] will contain the first element, mydata[1] the second
> etc.
> >
> > > > > > This would then become
> >
> > > > > > mydata = myResponseText.evalJSON();
> >
> > > > > > --
> > > > > > Michael Peters
> > > > > > Developer
> > > > > > Plus Three, LP- Hide quoted text -
> >
> > > > > - Show quoted text -- Hide quoted text -
> >
> > - Show quoted text -
>
>
> >
>
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