Invoke Javascript alert withing a PLSQL Function Block

Question

Hello,
I am having trouble trying to achieve the following functionality. I have a page with an update button. On submit of this update button I have created a PL/SQL Function Body which returns TRUE for CASE 1, and FALSE for CASE 2. If CASE1 is achived then the process will update the data in the underlying table and will do nothing for CASE2. What I simply want to do is for CASE2, I also want to throw up an Alert informing the user that he is in CASE2. My existing PL/SQL function looks something like:
BEGIN
IF CASE 1 THEN
RETURN TRUE;
ELSE
RETURN FALSE;
END;
I want something like:
IF CASE 1 THEN
RETURN TRUE;
ELSE
RETURN FALSE;
javascript:alert('Update did not work!');
END;
Can anybody help me?
Thanks
Mitesh

Answer 1

If you have submitted the page it is too late for javascript to run, javascript runs in the client, and the pl/sql runs on the server. If you want that to popup at that point you will need to have it popup on onLoad of the resulting page. Or do all of the validation in javascript then have javascript submit the page.