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 JS Question - JS to tell page what image to show		  New Topic  Topic Locked
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redbrad0
Advanced Member

USA
3725 Posts
Posted - 16 May 2004 :  18:03:18  Show Profile  Visit redbrad0's Homepage  Send redbrad0 an AOL message
I am trying to write something in JS where JS calls a outside page that generates the image to be displayed. Basically I was trying to set the image by..


document.ActivePooling.src = 'active_pull.asp?topics=&unique='+unique ;


Where when active_pull.asp runs some ASP script and then forwards to a image file for the JS script to use. For some reason it never sets the image. Does anyone have any suggestions?
Brad
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DavidRhodes
Senior Member

United Kingdom
1222 Posts
Posted - 17 May 2004 :  05:59:37  Show Profile
are you setting the correct content type in active_pull.asp?
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redbrad0
Advanced Member

USA
3725 Posts
Posted - 17 May 2004 :  09:15:05  Show Profile  Visit redbrad0's Homepage  Send redbrad0 an AOL message
I thought I would not need to set it if I am just FWD to a image? So I will put in the content settings and then FWD to the image?
Brad
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DavidRhodes
Senior Member

United Kingdom
1222 Posts
Posted - 17 May 2004 :  10:59:59  Show Profile
Are you just trying to response.redirect to the image?
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redbrad0
Advanced Member

USA
3725 Posts
Posted - 17 May 2004 :  16:20:27  Show Profile  Visit redbrad0's Homepage  Send redbrad0 an AOL message
Yep thats what the active_pull.asp page does, if it meets variable X then response.redirect "image1.gif" else response.redirect "image2.gif"
Brad
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DavidRhodes
Senior Member

United Kingdom
1222 Posts
Posted - 18 May 2004 :  09:39:15  Show Profile
I don't think that is possible, you would have to write the image and set the content type.
If your server has .NET installed you can do this easily with
Response.ContentType = "image/gif";
			Response.WriteFile("image2.gif");
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redbrad0
Advanced Member

USA
3725 Posts
Posted - 18 May 2004 :  16:27:29  Show Profile  Visit redbrad0's Homepage  Send redbrad0 an AOL message
Will try that when I get home, thanks David will keep you updated
Brad
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redbrad0
Advanced Member

USA
3725 Posts
Posted - 18 May 2004 :  22:05:47  Show Profile  Visit redbrad0's Homepage  Send redbrad0 an AOL message
I have .net installed but really want this done in ASP as its for Snitz Forums
Brad
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DavidRhodes
Senior Member

United Kingdom
1222 Posts
Posted - 19 May 2004 :  06:57:03  Show Profile
I've only done it in ASP using VB Components to change the image into binary format then
Set object = server.createobject("myobject.imagestuff")
Response.ContentType = "image/gif"
Response.BinaryWrite(object.binaryimage())


I'm not entirely sure you can do it purely in ASP
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Edited by - DavidRhodes on 19 May 2004 06:57:46
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redbrad0
Advanced Member

USA
3725 Posts
Posted - 19 May 2004 :  21:44:33  Show Profile  Visit redbrad0's Homepage  Send redbrad0 an AOL message
What if you open the image just like you do a text file to read it?
Brad
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DavidRhodes
Senior Member

United Kingdom
1222 Posts
Posted - 20 May 2004 :  04:24:45  Show Profile
Actually, it must be possible using ASP only as the "gallery mod" uses pure ASP to upload files. It'd be worth you looking at that code to see how it works
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redbrad0
Advanced Member

USA
3725 Posts
Posted - 20 May 2004 :  20:08:56  Show Profile  Visit redbrad0's Homepage  Send redbrad0 an AOL message
well its not needing to upload a image.

basically here is the deal (and i have pages done is php that do this)
page A has JS running that calls page B (asp page) to run a query. This query then needs to return the results to page A so page A can figure out if there is anything it needs to do. The way I was thinking is setting a image on page A to a different image that has a different size which the Js on page A can then check the image size to see if the script needs to run. Does this make since?
Brad
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DavidRhodes
Senior Member

United Kingdom
1222 Posts
Posted - 21 May 2004 :  04:21:46  Show Profile
quote:
Originally posted by redbrad0

well its not needing to upload a image.


I know but the image upload convert files to binary format, that the bit of code you need. Then you can use Response.BinaryWrite
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