This was a question in a previous topic but I didn't quite understand the answer, so here is the question again.

I display radio buttons from an radioArray I built in ASP which contains a code/short desc/long desc. When someone clicks a radio button I want to do invoke a Javascript function to display the short and long desc directly below the list of radio buttons.

1. should I use onClick="return display_desc(this.selectedIndex)"
OR onchange="return display_desc(this.selectedIndex)"

2. How do I get radioArray into a JS array for the JS function?

Any code examples of would be very helpful since I am a novice at JS.

Hii gaetano!!!
Try this, Hope this will help you

<script>
function checkit(obj,sdesc,cod,ldesc)
{
if(obj.checked==true)
 {
  document.myform.gcod.value=cod
 document.myform.sdesc.value=sdesc
document.myform.ldesc.value=ldesc
 }
else
{
document.myform.gcod.value=" "
 document.myform.sdesc.value=" "
document.myform.ldesc.value=" "
}


}

function checkit1(obj)
{
if(obj.checked==true)
 {
  arr=(obj.value).split("~")

  document.myform.gcod.value=arr[0];
 document.myform.sdesc.value=arr[1];
document.myform.ldesc.value=arr[2];
 }
else
{
document.myform.gcod.value=" "
 document.myform.sdesc.value=" "
document.myform.ldesc.value=" "
}


}
</script>
<form name=myform>
Method1<br>
<input type=radio name=x value=1 onclick="checkit(this,'Description1','code1','Long _Description1')">Item1<br>
<input type=radio name=x value=1 onclick="checkit(this,'Description2','code2','Long _Description2')">Item2<br>
Method2<br>
<input type=radio name=x value='Description1~code1~Long_Description1' onclick="checkit1(this)">Item1<br>
<input type=radio name=x value='Description2~code2~Long_Description2' onclick="checkit1(this)">Item1<br>

Method2<br>

Code<input type=text name="gcod" size=100 maxlength=100 readonly> <br>
ShortDesc<input type=text name="sdesc" size=100 maxlength=100 readonly><br>
LongDesc<input type=text name="ldesc" size=100 maxlength=100 readonly><br>

</form>


You can do this by two ways,it's up to your choice and application requirement.
if u use 1st method then use ASP/JSP code like
<input type=radio name=x value=1 onclick="checkit(this,'<%=desc%>','<%=cod%>','<%=l ong_desc%>')" >
and for 2nd method,here i use "~" for separator
<input type=radio name=x value='<%=desc%>~<%=cod%>~<%=long_desc%>' onclick="checkit1(this)">

Cheers :)

vinod