[thelist] image cache/no-cache
Richard Bennett
richard.bennett at skynet.be
Tue Aug 21 05:07:35 CDT 2001
> If I have someone re-upload an image and save it with the same name on the
> server, is there any clever way to force the browser to re-load that image
> only?
Hi, there is a nice little trick to make sure the image shown doesn't come
from cache, it uses javascript:
<tip type=images>
Need to be sure an image is not loaded from cache? try this:
<html><head><script language="Javascript">
document.write('http://www.cnn.com/images/logo.gif?'+new Date().getTime())
document.write('<br /><img src="http://www.cnn.com/images/logo.gif?'+new
Date().getTime()+'" />')
</script></head><body></body></html>
It adds a query-string to the imagename, so the image-name is always
different.
You can also update an existing image's source instead of using
document.write, using the browsers DOM.
</tip>
Richard.
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