On Mar 28, 7:55 am, "Russell Keith" <[email protected]>
wrote:
> I have an iframe and I am using the onbeforeunload to prevent data loss.
> What I need to do is set a variable called save to 0 after any change is
> made within the frame.
>
> I tried this but it doesn't work:
>
> document.observe('change', function(){
>
> save=0
>
> });
The change event doesn't bubble, so that won't work.
> How can I accomplish this task? Is it possible to observe for any
> change made?
If a control's value is equal to its defaultValue, then it hasn't
changed. That strategy accounts for the case where a user modifies
the value, but sets it back to its original value before submitting
the form.
You can attach a listener to the unload handler to check all form
controls to see which are different from their default value when the
form is submitted or the page closed - test it well, there are many
foibles with whatever solution you choose.
--
Rob
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