Date: 12/27/06 (Web Development)    Keywords: database, jsp

quick question for the gurus here.
i've inherited someone's code at work.
the page is a little form. JSP. struts.
1 text field (date), 1 dropdown to select from. 'submit' button.
there is validation (prior to submitting) of the date. if date is invalid, the page reloads w/out resetting the data.
on submit, a row is written to the database. there should always be 1 row on submit.

problem: sometimes, the page submits 2 rows.

originally, the 'submit' button was written as
Submit

then it was changed to
Submitit>

then back to the first one.

i've tried looking up the cases where one should/shouldn't use plain submit vs. onclick"SubmitForm()", but so far i'm coming up emptyhanded.

could someone please explain this to me?
thank you....

P.S: and, of course, if someone could think of something that could be causing 2 rows to be submitted (occasionally), that would be even better. btw, the 'submit' button is only being clicked ONCE when 2 rows get created.

UPD: it seems that occasional duplication happens only when onClick is part of the submit. when onClick is removed and it's just the submit, i can't produce the duplication no matter what. question: why is onClick causing the occasional duplication (at least in part)?

Source: http://community.livejournal.com/webdev/380061.html