How to populate values in Apex item

Question

Hi,
I am using apex collection item to capture data my requirement is to calculate data using the apex item
This requirement is like this. I am using a SQL query like this
select
wwv_flow_item.TEXT(1,NULL,20,10) "A",
wwv_flow_item.TEXT(2,NULL,20,10) "B",
wwv_flow_item.TEXT(4,NULL,20,10) "C"
from dual
There 3 text boxes are generated in the window when i enter 3 in A and 2 in B it must give me a sum value in C as 5
this has to be done dynamicall as end user key in values this can be done using java script or any other method please suggest
Thanks
Sudhir.

Answer 1

Hello Sudhir,
>> If there are multiple text box …
If there are multiple text boxes, you need to allocate each a unique ID. The easiest is to use the substitution string #ROWNUM#. The code should look similar to the following:
select empno,
apex_item.TEXT(1,null,20,10,'onchange="addItems(this);"','A'||'#ROWNUM#') "A",
apex_item.TEXT(2,null,20,10,'onchange="addItems(this);"','B'||'#ROWNUM#') "B",
apex_item.TEXT(3,null,20,10,'onchange="addItems(this);"','C'||'#ROWNUM#') "C"
from empBecause we are in a multi-row environment, we need to pass the line number we are on, into the JavaScript function, hence the use of ‘this’.
In the JavaScript function, we first need to determine the line number we are on, and then use it to perform the calculation. The code can look similar to the following:
<script type="text/javascript">
function addItems(pThis) {
  /* extract rownum */
  var line_no = pThis.id.substr(1);
  $x('C'+line_no).value = parseInt($v('A'+line_no)) + parseInt($v('B'+line_no));
</script>Regards,
Arie.
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