Hi Paul
Here's some code I posted to a different list (burn the heretic etc.). The
ey thing to remember is that ALL CF code executes before ANY JavaScript is
processed, as the former happens on the server, the response is sent to the
browser, and only then does the JavaScript kick in.
<cfquery datasource="dsn" name="getCats">
SELECT c.Category, c.CategoryID, s.subCategory, s.subCategoryID
FROM subCategoryID s INNER JOIN Category c ON s.CategoryID = c.CategoryID
ORDER BY c.CategoryID, s.subCategoryID
</cfquery>
<cfset prevCatID = "">
<script language="JavaScript">
<CFOUTPUT query="getCats">
<cfif getCats.CategoryID neq prevCatID>
<!--- New category --->
subCatArray#getCats.CategoryID# = new Array();
<cfset i = 0>
</cfif>
subCatArray#getCats.CategoryID#[#i#] =
'#getCats.subCategory#';
<cfset i = i + 1>
<cfset prevCatID = getCats.CategoryID>
</CFOUTPUT>
function swapSubCats(subCategoryID)
{
var arrayToLoad = eval('subCatArray' + subCategoryID);
loadArrayToSelectBox(arrayToLoad,document.myForm.subCategoryID);
}
function loadArrayToSelectBox(optionsArray,selectBox)
{
//Clear old options
selectBox.options.length=0;
for ( i = 0; i < optionsArray.length; i ++ )
{
selectBox.options[i] = new
Option(optionsArray[i],optionsArray[i],0,0);
}
}
</script>
<cfset prevCatID = "">
<form name="myForm">
<select name="CategoryID"
onchange="swapSubCats(this.options[this.selectedIndex].value)">
<CFOUTPUT query="getCats">
<cfif getCats.CategoryID neq prevCatID>
<!--- New category --->
<option
value="#getCats.CategoryID#">#getCats.Category#
</cfif>
<cfset prevCatID = getCats.CategoryID>
</CFOUTPUT>
</select>
<br><br>
<select name="subCategoryID">
</select>
</form>
For Category, read menu / menugroup in your example, whilst for subcategory,
read phase.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: 26 May 2004 08:31
To: [EMAIL PROTECTED]
Subject: [ cf-dev ] Relative Select List
Having read an old Javascript book last night I now have ....
WHERE (Menu_Group =
Selected_menu.options[selected_menu.options.selectedIndex].value;)
As expected this doesn't work either .... :(
Can anyone help me with this one please? - My JavaScript is "even more
worserer" than my Coldfusion (if it could be worse...)
Regards - Paul
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