onbeforeupdate Event | Internet Development Index |
Fires on a databound object before updating the associated data in the data source object.
Syntax
Inline HTML <ELEMENT onbeforeupdate = "handler" ... > All platforms Event property object.onbeforeupdate = handler JScript only object.onbeforeupdate = GetRef("handler") Visual Basic Scripting Edition (VBScript) 5.0 or later only Named script <SCRIPT FOR = object EVENT = onbeforeupdate> Internet Explorer only
Event Information
Bubbles Yes Cancels Yes To invoke Cause an object to receive focus, change the value of the object, and either cause the object to lose focus or force the page to unload. Default action Signals that the data contained in an object has changed.
Event Object Properties
Although event handlers in the DHTML Object Model do not receive parameters directly, a handler can query an event object for data.
altKey Sets or retrieves a value that indicates the state of the ALT key. altLeft Sets or retrieves a value that indicates the state of the left ALT key. cancelBubble Sets or retrieves whether the current event should bubble up the hierarchy of event handlers. clientX Sets or retrieves the x-coordinate of the mouse pointer's position relative to the client area of the window, excluding window decorations and scroll bars. clientY Sets or retrieves the y-coordinate of the mouse pointer's position relative to the client area of the window, excluding window decorations and scroll bars. ctrlLeft Sets or retrieves the state of the left CTRL key. offsetX Sets or retrieves the x-coordinate of the mouse pointer's position relative to the object firing the event. offsetY Sets or retrieves the y-coordinate of the mouse pointer's position relative to the object firing the event. returnValue Sets or retrieves the return value from the event. screenX Retrieves the x-coordinate of the mouse pointer's position relative to the user's screen. screenY Sets or retrieves the y-coordinate of the mouse pointer's position relative to the user's screen. shiftLeft Retrieves the state of the left SHIFT key. srcElement Sets or retrieves the object that fired the event. type Sets or retrieves the event name from the event object. x Sets or retrieves the x-coordinate, in pixels, of the mouse pointer's position relative to a relatively positioned parent element. y Sets or retrieves the y-coordinate, in pixels, of the mouse pointer's position relative to a relatively positioned parent element.
Remarks
If the onbeforeupdate event is canceled, the onafterupdate event does not fire.
Standards Information
There is no public standard that applies to this event.
Applies To
See Also
Introduction to Data Binding