Javascript in pl/sql process block

Question

Hi,
Can someone please tell me why this code is not working.....
I have put this in my pl/sql process....
htp.p('<script language=javascript>');
htp.p('var r=confirm("This is a duplicate record , do you want to proceed?");');
htp.p('if (r==true)');
htp.p('{document.wwv_flow.submit();}');
htp.p('else{ }');
htp.p('</script>');
Please help
thanks and regards,
deepa

Answer 1

What you need, in your case, is the reverse approach
– calling PL/SQL from JavaScript code – which is
possible, using AJAX...
It seems like what you are trying to do is a
validation process. Pressing the button should fire a
JavaScript code, which in turn will fire an on-demand
PL/SQL procedure, and according to the returned
results will display a confirm dialog boxHi Arie,
This is exactly what I am struggling to do, but I don't think is working...is there a good example somewhere, with good documentation saying what goes where? I've tried looking at Carl's On-Demand page example and I just can't tell if I'm following it correctly.
Based on what is entered in P4_PROJECT_NUM, I need to verify that the value isn't already in the database when the user tabs out of the field.
My javascript for page 4 (in HTML Header):
function checkCO()
var get = new htmldb_Get(null,$x('pFlowId').value,'APPLICATION_PROCESS=validate_value',4);
get.add('ID', $x('P4_PROJECT_NUM').value)
gReturn = get.get();
if(gReturn) // if function return true
alert($x('P4_PROJECT_NUM').value + ' already exists in database.');
get = null;
//-->
</script>
My onDemand process, from the Application Processes:
declare
v_count number;
cursor cr_check_co is
select count(*)
from usd_changeorders
where chg_ref_num = v('ID');
begin
open cr_check_co;
fetch cr_check_co into v_count;
close cr_check_co;
if (nvl(v_count, 0) = 0) then
return true;
else
return false;
end if;
end;
I am calling the javascript from the onBlur event of the field I want verified.
I am getting an alert, but it is displaying every time, whether the value is valid or not.
Can you tell me what I am doing wrong?
Thanks!!
Janel