setting a server-side hidden variable in client-side script

wrbodine · Aug 24, 2001

Hi,

I'm trying to submit a form when I click on an image, and set a variable within that form to a specific value, depending on which image was clicked on. How can I set that variable in client-side script? (JavaScript or VBScript is fine). Here's some of the page's code below. With this code I get an error on the line where I try and set the value saying:

Error: 'document.MyForm.vari' is null or not an object

<head>

<script language="JavaScript&quot

function CheckValues(cond, value) {

...
if (cond == "end&quot

{
document.MyForm.vari.value = value;
document.MyForm.Submit();
}

// 3 other if conditions (not really necessary, but how I was doing it at first...)

}

</script>

<body>
<form ACTION="DailyJumboForm.asp" METHOD="POST" name="MyForm">

...
<input type="hidden" name="vari" value="<%=strVari%>">

<input type="image" src="../../../images/btnForwardArrowLine.gif" onClick="Javascript:Arrows('end', 'endValue');">

3 other images

...
</form>

Thanks,
Ray

lee2k · Aug 24, 2001

hi,

use the following code. this coding will set the value 1 or 2 or 3 in the "hidvalue" field of "frmtest" form. this value will be changed depends upon the image u click. after the image clicked this form will be submitted to "javascript1.asp" where u can get the value of the hidden field by using request.form("hidvalue&quot

.

hope this code will be helpful to u in some way.

by
lenin
lenin_j@rediffmail.com

<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
<TITLE></TITLE>
<SCRIPT LANGUAGE=javascript>

</SCRIPT>

</HEAD>
<BODY>
<form name="frmtest" method="post" action="javascript1.asp">
<input type=hidden name=hidvalue>
<a href="javascript:setvalue(1)"><img src="p1.jpg"></a>
<BR>
<a href="javascript:setvalue(2)"><img src="p2.jpg"></a>
<BR>
<a href="javascript:setvalue(3)"><img src="p3.jpg"></a>
<BR>
</form>
</BODY>
</HTML>

wrbodine · Sep 6, 2001

Thanks Lenin,

for some reason I'm still getting the same error with this code. Maybe it's something I haven't noticed yet....

dwu1998 · Sep 6, 2001

Have you tried change

"onClick="Javascript:Arrows('end', 'endValue');"

to

"onClick="Javascript:CheckValues('end', 'endValue');"?

Good luck,

wrbodine · Sep 6, 2001

Yeah, thanks, I actually ended up calling it setvalue in both places; I've tried passing a string or an int, and that didn't make a difference either...

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setting a server-side hidden variable in client-side script

wrbodine

Programmer

lee2k

Programmer

wrbodine

Programmer

dwu1998

Programmer

wrbodine

Programmer

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