In the example at that link, the entire form is iterated through. In my case however the form had radipbuttonlists both in and out of the repeated, and I only wanted to iterate through the repeater for this check. I already had simpler functions for the rest of them. Additionally I did not want a message to pop up for every unanswered radiobuttonlist in this section, but merely one generic "please rate all instructors" message. So I wrapped the repeater in a div, and it is this div that the variable called container below references.
// Grabs all inputs - radio, checkbox, text, buttons and lists -sticks them in an array
var last = "NameUnlikelyToBeUsedAsAnElementName";
var container = document.getElementById("divRpt");
var allInputs = container.getElementsByTagName("input");
// walk through the array
for (i = 0; i< allInputs.length; i++)
{
var input = allInputs[i];
if (input.name == last) continue; // if this object name is the same as the last checked radio, go to next iteration
// checks to see if any one of similarly named radiobuttons is checked
else if (input.type == "radio" )
{
last = input.name;
var radios = document.getElementsByName(input.name);
var radioSelected=false;
//iterate over question options
for (j=0; j < radios.length; j++)
{
if(radios[j].checked)
{
radioSelected=true;
break; // Found it, proceed to next question
}
}
if (!radioSelected) // no option selected
{
bOK = false;
}
}
if (!bOK){alert("Please rate the overall teaching effectiveness for your instructor(s)");}
