Checking if a form has been submitted.

[clarket]

Hi,
I have a html form where all the details are saved in a MySQL database
that uses PHP to insert the data into the database.
The problem I'm having is that if people dont submit the form then the
data doesnt get saved to the database.
Does anyone know a way to show a message e.g. "Form has not been saved"
if the user tries to exit the page without pressing the submit button?
or does anyone have an example of this?
Thanks,
Tony.

[c.anandkumar]

clarket wrote:

Does anyone know a way to show a message e.g. "Form has not been saved"
if the user tries to exit the page without pressing the submit button?

How does a user 'exit' a page? If you had meant clicking on other
links, then add a handler to all your links. This can be tedious if you
have a lot of links - unless you have a good editor - you could change
a link like this - <a href="http://www.something.com">... to something
like this - <a
href="javascript:dataNotSaved('http://www.something.com')"> and
function dataNotSaved(url) {
alert('Data not saved');
document.location.href = url;
}
If you have links that open a new window, or load a page in a frame,
then you could handle it by having an ID to each anchor tag, finding
the 'target' attribute of the element and loading the URL
appropriately.

[Darkstar 3D]

Use an onClose or onUnload (whatever its name) event set to fire if a
certain event hasn't happened or variable isn't set. Have your submit
button set the variable, and onUnload check for it. Googling, it seems
that it is onunload and onclose.