onbeforeupdate (HTML attribute)
Syntax
onbeforeupdate="confirmDataTransfer();"
Description
This event fires immediately before data is transferred from the current element to which the event handler is attached to a data provider.Value
No fixed value - could be a call
to one or more defined functions or a simple alert()
statement.
Compatibility
Non-standard event defined by Microsoft - does not apply to any browser other than Internet Explorer.
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