JSDO properties, methods, and events reference : objParam property
  

objParam property

A reference to the object, if any, that was passed as an input parameter to the JSDO method that has returned the current request object.
If no object parameter was passed to the method, the objParam property is undefined.
Data type: Object
Access: Read-only
Applies to: request object
The objParam property is available for all JSDO events where an object parameter is passed to the JSDO method, including saveChanges(true), where such object parameters are passed using a single Submit operation, or in the request object returned to a jQuery Promise callback.
However, this property does not apply to the following events:
*afterSaveChanges, when saveChanges( ) or saveChanges(false) is called
*beforeCreate
*beforeDelete
*beforeUpdate
*beforeSaveChanges
This request object property is also available for any session online and offline events that are fired in response to the associated resource operation when it encounters a change in the online status of the JSDO login session (JSDOSession or Session object). The request object is itself passed as a parameter to any event handler functions that you subscribe or register to JSDO events, any returned jQuery Promises, and to the online and offline events of the session that manages Data Object Services for the JSDO. This object is also returned as the value of any JSDO invocation method that you execute synchronously.

See also:

fill( ) method, invocation method, invoke( ) method, saveChanges( ) method