How to pass javascript variable to server side

Andraw · #1 (**permalink**) March 31st, 2005, 03:36 PM

Hi, all,

I have a function defined in the server side(<%...%>) in asp, now I want to call the function from javascript and pass the javascript variable as argument to the server side function, is it possible??
For example:
<%
function resizeImage(fileName, width, height)
    ............
end function
%>
<script langage=javascript>
  var fileName = "......."

  answer = "<%=resizeImage(fileName , 200,200)%>"
</script>
The function must be defined in the server side. I know the above line doesn't know the variable "fileName", is there any way I can pass it to the function in the same page????? don't think about call the page itself again or submit the form, just in the same page.

andraw

om_prakash · #2 (**permalink**) April 1st, 2005, 12:28 AM

Hi,

You cannot call server side functions from javascript, You can submit the form and then call the function.

Om Prakash

Andraw · #3 (**permalink**) April 1st, 2005, 10:27 AM

Thanks!

Andraw

anoop.goyal · #4 (**permalink**) March 7th, 2006, 12:50 AM

Hi,

Though it is not possible but, another solution is perfect to call server-side function that is

In this problem [u]you cannot pass a variable to server side function </u>but, you can pass variable value to that function and it will send result back to client on same page.

DOIT.

--Anoop K Goyal
Jaipur

anoop.goyal · #5 (**permalink**) April 26th, 2006, 07:05 AM

I want to access javascript variable in vbscript.
It can be done if javascript code is runat=server but,
if [u]I want to run this on client-side then how it will be</u>? write me.

anoop.goyal · #6 (**permalink**) April 26th, 2006, 07:08 AM

I want to get FILE input box value in vbscript variable for validation purpose at client side.

How can I do it?

mat41 · #7 (**permalink**) April 26th, 2006, 09:07 PM

;;;I want to access javascript variable in vbscript. It can be done if javascript code is runat=server but.

How do you do this I am intrigued?

Wind is your friend
Matt

woodyz · #8 (**permalink**) May 2nd, 2006, 10:06 AM

Ahhh... this response is to the original post. It looks to me that you might want to use Ajax.
I am sure you would have thought of that yourself if you had been exposed to it before now.

Essentially, Ajax allows you to call server-side functionality from within javascript.

There is lots of info on Ajax and how to do it so all you have to do is a Google search to start exploring.

Woody Z http://www.learntoprogramnow.com

woodyz · #9 (**permalink**) May 8th, 2006, 07:28 PM

Quote:

quote:Originally posted by mat41
;;;I want to access javascript variable in vbscript. It can be done if javascript code is runat=server but.

How do you do this I am intrigued?

I am not sure I am addressing your question... but have a look at this - It is all server side, of course.

Code:

<%@LANGUAGE="VbScript"%>

<SCRIPT LANGUAGE="JavaScript" RUNAT="Server">

var m = "I am in a JavaScript Variable"

function HelloJavaScript()
   {
      return "Hello World in JavaScript";
   }

function printWords(words)
   {
      return "These words were passed in to a JavaScript function \"" + words + "\""
   }

</SCRIPT>

<SCRIPT LANGUAGE="VBScript" RUNAT="Server">

function HelloVbScript
   HelloVbScript="Hello World in VBScript"
end function

function passingValueToVbscriptFromJavascript(myValue)
   passingValueToVbscriptFromJavascript = "We passed the words: """ &  myValue & """ From JavaScript to VbScript"
end Function

</SCRIPT>

<%

' we are back in VbScript here...
Response.Write(HelloVbScript() + "<br/>")
Response.Write(HelloJavaScript() + "<br/>")

' we are calling Javascript from within VbScript
Response.Write(printWords( HelloVbScript ) + "<br/>")

' and here is a javascript variable being accessed from vbscript
Response.Write m

%>

Woody Z http://www.learntoprogramnow.com

mat41 · #10 (**permalink**) May 8th, 2006, 07:53 PM

Very interesting indeed, thankyou for the in-site. After looking at your code I done some further looking pureley out of interest (I can not imagine why I would have a need for it however find it interesting) This link would add to the usefulness of this post:

http://www.webhostingtalk.com/archiv...d/91704-1.html

Wind is your friend
Matt

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