The image as a data pipe trick is a means of accomplishing a request from
the server without reloading the page, usually using javascript to change
the src attribute of the image. As just one example:
A billing form with a credit card number field might have an image data pipe
which requests a page from the server to determine if the card number is
valid such as
<input type="text" name="cc" onblur="validatecc();">
<img name="validatecc" src="spacer.gif">
<script>
function validatecc() {
document.images.validatecc.src
= "validatecc.cfm?ccno="
+ document.myform.cc.value;
}
</script>
When the page finishes processing, it uses cfcontent to display an image
which may be the spacer if the number validated okay, or a warning message
if the card failed the validation routine.
I believe with some browsers you can also get javascript functionality from
the page called through the image, but I've not really worked with image
data pipes personally, so I can't give any real specifics.
s. isaac dealey 954-776-0046
new epoch http://www.turnkey.to
lead architect, tapestry cms http://products.turnkey.to
certified advanced coldfusion 5 developer
http://www.macromedia.com/v1/handlers/index.cfm?ID=21816
> What is it you achieve in doing this to display images? :)
> Shawn Regan
> pacifictechnologysolutions
> 15530-B Rockfield Blvd. Suite 4
> Irvine, CA 92618
> 949.830.1623
> w w w . p t s 1 . c o m
> -----Original Message-----
> From: Thane Sherrington [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, November 20, 2002 7:24 AM
> To: CF-Talk
> Subject: Re: Gif Pipes
> At 10:12 AM 20/11/02 -0500, Tipton Josh (orl1jdt) wrote:
>>Can someone please point me in the direction on information for creating,
>>implementing, and using gif pipes.
> It's fairly simple. You create a link like this:
> <IMG src="http://www.mysite.com/mypage.cfm";>
> Then you create the file mypage.cfm with whatever you want in it and end
> it
> with.
> <cfcontent type="image/gif" file="placer.gif" deletefile="No">
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|
Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4
Subscription:
http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=4
FAQ: http://www.thenetprofits.co.uk/coldfusion/faq
Get the mailserver that powers this list at http://www.coolfusion.com
