Using variables in

[shakytom]

Hello there! I am trying to ensure that users only tick one combobox for each question in a questionnaire. Each set of comboboxes is given a name based on the question it belongs to.

To find out the amount of comboboxes there are for a given question I have been using document.questionnaire.1.length (where 1 is the name of every combobox in that set), however when I try and do it using the variable qnum it doesn't work at all.

function chkcontrol(j, qcount, qnum) {
var total=0; 
alert("number of boxes: " + document.questionnaire.[qnum].length);
var question = document.questionnaire.[qnum].length;
for(var i=0; i < question; i++){
alert(qnum)  
if(document.questionnaire.question[i].checked){
total =total +1;}
if(total > 1){
alert("Please only choose 1 answer per question") 
document.question[j].checked = false ;
return false;
}
}
}

Any help would be much appreciated

[Padonak]

using radio groups instead can save your time

[Logic Ali]

Without seeing your form it's hard to be sure, but element names must not start with a digit.

The syntax is: formReference[ elementNamePrefix + index ]