on_before_scroll(item)
domain: client
language: javascript
class Item class
Occurs before an application scrolls from one record to another.
The item parameter is an item that triggered the event.
Write an on_before_scroll event handler to take specific action immediately before an application scrolls to another record as a result of a call to the first, last, next, prior, and locate methods. on_before_scroll is called before all other events triggered by these methods and any other methods that switch from record to record in the item dataset.