Calling a java script function when the value of an item changes

Question

Hi,
I have got 2 items which are of "Text field(disabled,saves state)" type. The items are "P2_Industry" and "P2_Industry_segment". Have a link next to each item label, so that a pop up opens. Industry pop up shows all the industries and based on the selected industry, the industry segment pop up shows only the corresponding industry segment. Now, there is a problem. Once an industry and an industry segment is selected, if we change the industry, the industry segment does not change, which is not right. I want the industry segment field value to become null once the industry field is changed. Thought of writing an onChange html cell attribute, but don't know why, it is not working in the case of "Text field(disabled,saves state)" item. It works fine for just "Text field" item.
Could anyone please help me with a solution as the item must be of "Text field(disabled, saves state)" type.
Thanks,
Vignesh

Answer 1

Hi,
This is the function I use to return value for P2_INDUSTRY and a similar one for P2_IND_SEGMENT as well.
<script>
function test(){
var radioLength = document.wwv_flow.p_ind_array.length;
var retVal = '';
if(radioLength == undefined)
          if(document.wwv_flow.p_ind_array.checked)
               retVal = document.wwv_flow.p_ind_array.value;
          else
               return "";
     for(var i = 0; i < radioLength; i++) {
          if(document.wwv_flow.p_ind_array.checked) {
          retVal = retVal + ';' +document.wwv_flow.p_ind_array[i].value;
retVal = retVal.substring(1, retVal.length);
opener.document.getElementById('P2_INDUSTRY').value = retVal;
window.close();
</script>
I guess the change needs to be done in page 2 only because, on change of INDUSTRY, the function needs to be triggered to clear INDUSTRY_SEGMENT value.
Thanks,
Vignesh
Edited by: Vignesh N on Nov 3, 2009 12:37 AM