Java Script variable 1

Parasu · Jun 27, 2001

Hi all,
I want to pass a Java Script variable's value from Java Script to the ASP code. Is this possible.
Example,
<script language = "java script">
{
var a;
a = 100;
}
<%
response.write (a)
%>

Is this possible. Can I use the java sript variable from within an ASP code.

Very urgent
Kindly help
Thanx in advance
Parasuraman Parasuraman

kristof · Jun 27, 2001

Hi parasu,

Alas, no.

You have to keep in mind that ASP is a Server script, while JavaScript is Client side. For ASP (meaning IIS) to recognize the variable a it has to pass through the server.

You can accomplish this by reloading the same page with the value of a added as a querystring and then display it like this:

<%=Request.QueryString("a&quot

%>
(Should check if it exists)

But, in your example, this isn't needed, just write:

document.write(a) and let JavaScript do the writing.

Hope I could help you a bit?

Kristof

Parasu · Jun 27, 2001

Dear Kristof,
Thanx for that. But, will the QueryString will pass even the java script variable??
Kindly help me by showing some sample code
Thanx again Parasuraman

kristof · Jun 27, 2001

Well, here goes:

This is the code for a page which I called jsasptest.asp.

<html>
<head>
<title>ASP Test</title>
<script language="JavaScript">
var a;
a = 100;

function reloadPage(val) {
url = "jsasptest.asp?a=" + val
window.location.href = url;
}
</script>
</head>

<BODY BGCOLOR="#FFFFFF">
<%if not VarType(Request.QueryString("a&quot

) = 0 then%>
<%=Request.QueryString("a&quot

%>
<%else%>
<a href="javascript:reloadPage(a)">Reload</a>
<%end if%>
</body>
</html>

You could also relocate to another page and let that one do the output.
(Ofcourse, this is a simplied example)

Glad to be of service.

Parasu · Jun 27, 2001

Thanx alot Kristof
So nice of u. Parasuraman

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Java Script variable 1

Parasu

Technical User

kristof

Programmer

Parasu

Technical User

kristof

Programmer

Parasu

Technical User

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