Quirks Mode, IE7 Mode, IE8 Mode, IE9 Mode, and IE10 Mode (All Versions)

onbeforeupdate of type Function

Occurs on a databound object before updating the associated data in the data source object.

To invoke, change the data that the object contains.

  • Bubbles: Yes

  • Cancelable: Yes

  • Context Info: None

This attribute is an extension to HTMLElement.

See also onafterupdate.