How to refresh cached image ONCE

[C. (http://symcbean.blogspot.com/)]

Hi all,

I have an application which generates image graphs. These cache nicely
at the client, however if the user submits more data, I'd like to
force a reload of the image from the server.

I had a google, but all I could find were suggestions to use a varying
query in the URL. This is not a solution to my problem because if I
change the page to do that then ALL the graphs will be reloaded every
time.

I tried

document.getEle mentById("imgs_ id_tag").src.re load():

and

document.getEle mentById("imgs_ id_tag").reload ():

But just got errors.

(If I open JUST the image URL in a browser, I get the cached version,
if I then click on refresh, it goes back to the server to get a new
copy - which is what I want).

Any suggestions?

TIA

C.

[Jorge]

On Jul 27, 2:59*pm, Dr J R Stockton <[e-mail] mon.co.ukwrote:

<jo...@jorgecha morro.composted :

>What do you think about this :

* * * *do {
* * * * *x*= 2, x-= Math.floor(x), t++;
* * * *} while ( x0) // shift left until empty

Or * *for (x = Math.random(), t = 0 ; x%1 0 ; t++) x *= 2

Or do {} while (t++, (x*= 2)%1 0)

Why there's not an "internatio nal obfuscated JavaScript code
contest" ?

--Jorge.

[Dr J R Stockton]

In comp.lang.javas cript message <abae3935-396a-4fca-aaf7-ea9e7c832a91@i7
6g2000hsf.googl egroups.com>, Mon, 28 Jul 2008 08:02:04, Jorge
<jo***@jorgecha morro.composted :

>Or do {} while (t++, (x*= 2)%1 0)

or do {t++} while ((x*=2)%1)

>Why there's not an "internatio nal obfuscated JavaScript code
contest" ?

You're in it! But that means "count doublings until integer", which
expresses the need rather exactly. Page js-randm.htm again updated;
results as before.

--
(c) John Stockton, nr London, UK. ?@merlyn.demon. co.uk Turnpike v6.05 MIME.
Web <URL:http://www.merlyn.demo n.co.uk/- FAQish topics, acronyms, & links.
Proper <= 4-line sig. separator as above, a line exactly "-- " (SonOfRFC1036)
Do not Mail News to me. Before a reply, quote with ">" or "" (SonOfRFC1036)

[Jorge]

On Jul 29, 2:34*pm, Dr J R Stockton <[e-mail] mon.co.ukwrote:

>
or * * * do {t++} while ((x*=2)%1)

You got it right. Oh yeah, now that's perfect !

--Jorge.