Refresh to update images (without creating a loop)
Robert Karlsson
On a webpage I got a dynamically generated jpg (from PHP) that the
browser don't know has been updated (it uses the cached version). I
can't figure out a way to update the page besides asking the user to
press Reload :-(
<meta http-equiv="refresh" value="1"> does not work since it will
refresh the page endlessly.
With JavaScript onLoad="FOO" might work... but how?
Best
Robert
Jukka K. Korpela
> On a webpage I got a dynamically generated jpg (from PHP) that the
> browser don't know has been updated (it uses the cached version).
What makes you think this would be an HTML question?
> <meta http-equiv="refresh" value="1"> does not work since it will
> refresh the page endlessly.
In some browsing situations, yes, the browser will refresh the HTML
document. But what has that got to do with your problem with the jpg
file?
> With JavaScript onLoad="FOO" might work... but how?
Ummm... were you thinking about putting JavaScript into an image file?
It's time to recommend the usual resource on caching:
http://www.mnot.net/cache_docs/
--
Yucca, http://www.cs.tut.fi/~jkorpela/
Pages about Web authoring: http://www.cs.tut.fi/~jkorpela/www.html
Tino Korth
is that a solution for you?
You have to put the source into your html-file where you includes your
image.
http://www.f1ndex.de/de/newsletter/impressum.php -> [webcam]
bye
tino
----------------------------------------
<head>
<meta http-equiv="refresh" content="30; URL=./webcam.html">
<meta http-equiv="expires" content="0">
</head>
<script language="JavaScript">
<!--
function neuLaden() {
location.reload(true);
}
window.setInterval("neuLaden()", 30000);
//-->
</script>
<body>
<img src="...">
</body>