SP.ListDataSource.properties property (sp.js)
Gets the properties associated with the connection to the data source.
Applies to: apps for SharePoint | SharePoint Foundation 2013 | SharePoint Server 2013
var value = SP.ListDataSource.get_properties ()
Return value
Type: Dictionary
Remarks
It must not be null. It must contain the following keys: "LobSystemInstance", "EntityNamespace", "Entity", and "SpecificFinder".