Passing javascript value to coldfusion variable on same page?

[dmorand]

I'm assuming I can't pass a javascript variable to a cf variable on the same page because js is client and cf is server correct?

I've got a drop down list which I want it to populate a form on the same page when the user selects a new value.

[acoder]

This should be possible using Ajax. Can you show your code?

[dmorand]

This should be possible using Ajax. Can you show your code?

Here is the code snippet:

function readOption(which){
    var accessID = which.value;    
    alert(accessID);
        //#accID# = accessID;
 

    <select name="retRequest" onChange="readOption(this)">
        <cfoutput query="retRequests">
            <cfset #displayDate# = #DateFormat(#reqDate#,"mm-dd-yyyy")#>
            <option value=#accID#>#displayDate#  &nbsp; #empLastName#,#empFirstName#</option>
        </cfoutput>
    </select>
 

Should I go ahead and start learning ajax and forget about javascript? I'll have to read up on what exactly ajax does. I'm not that familiar with it. I've heard a lot about ajax and ruby so I guess I should dive in now.

[acoder]

So once you have accessID, why does a Coldfusion variable need to be set?

Should I go ahead and start learning ajax and forget about javascript?

The J in AJAX is JavaScript. You use JavaScript for the client-side aspect of AJAX.

[dmorand]

I need the accessID value because it's the key value I need to query off of. It's going to be in a

<cfquery name="retRequests" datasource="Security_Access" dbtype="ODBC">
    SELECT reqDate,reqBy,empLastName,empFirstName from tblAccessRequest
    where accID = #accessID#</cfquery>
 

[acoder]

This is a JavaScript problem, so I'm moving this to the JavaScript/AJAX forum.

Check out this AJAX example and the AJAX tutorials in the Offsite Links sticky in the JavaScript forum.