Javascript fuction to CFML

[Jighead2]

Hi,

Anyone know how to set the results of a javascipt function into a coldfusion
variable that can be used on the same page as the javascript function? ... I
Can do this with ASP <% InsertSignature(122.95) %> and it works but do not know
how to do it with CF. Thanks
The js function......






<script>
function InsertSignature(amount)
{
var time = timestamp();
var merchantID = getMerchantID();
var data = merchantID + "" + amount + "" + time;
var pub = getPublicKey();
var pvt = getPrivateKey();
var pub_hash = hopHash(data, pub);
var pvt_hash = hopHash(data, pvt);

Response.Write('<input type="hidden" name="amount" value="' + amount +
'">\n');
Response.Write('<input type="hidden" name="orderPage_timestamp" value="' +
time + '">\n');
Response.Write('<input type="hidden" name="merchantID" value="' + merchantID
+ '">\n');
Response.Write('<input type="hidden" name="orderPage_signaturePublic"
value="' + pub_hash + '">\n');
Response.Write('<input type="hidden" name="orderPage_signaturePrivate"
value="' + pvt_hash +'">\n');
}
</script>

[vkunirs]

Hi

This is sample to call the function:

<script language="javascript">
function InsertSignature(amount)
{
document.write("<input type=text name=s value=srinu>");
}
</script>
<cfoutput>
<script>
InsertSignature(25);
</script>
</cfoutput>

[Jighead2]

Hi vkunirs,

Yes, thank you but this is not the question. You'll notice that the
javascript method is Response.Write not document .write

I need the "evaluated" response.write output to a <cfsavecontent variable>.
If I enclose

<cfsavecontent variable="myvar">
<script>InsertSignature(1000000.00)</cfscript>
</cfsavecontent>

Then the value of #myvar# is literally set to
"<script>InsertSignature(1000000.00)</cfscript>"

I need it to be
"<input type="text" name="amount" value="1000000.00">
<input type="text" name="orderPage_timestamp" value=""> etc... etc...
"
Am I making sense?

[dempster]

ColdFusion is server-side programming and JavaScript is client-side
programming. I think you may be using ASP/JScript on the server side. Is it
possible to convert your script to all ColdFusion? Since ASP commands are
processed by a different server program than ColdFusion commands, I'm not sure
there is a way to pass values back and forth.

-Paul

[Jighead2]

Hi Dempster,

Yes, i understand javascript is client and cf, asp etc. are server but that
does not mean I should not be able to convert returned values from a javascript
function. It's possible in php, asp, and perl. So why not CF.

Thanks

[dempster]

Well, if you are using client-side JavaScript, you can include a hidden field
in your form and then have the JavaScript function set the value of this hidden
field. When the page is submitted, ColdFusion can access the value as a form
field.

Setting the value of the hidden field depends on how your JavaScript function
runs. Is it an event handler like onload or onsubmit? That's up to you.

-Paul

[Jighead2]

Paul,
Thanks but not what i need... I understand your approach and how to do it. I'm trying to get around this way of doing it. However I may have no other choice. Can WDDX do this?