An application component can be set to one of the following scopes:

Specifying Component Scopes

You specify a component’s scope by setting its $scope property to global, session, request, or window. For example, a NewPerson component might be set to session scope as follows:

$class=Person
$scope=session
name=Bill
age=28

If a component’s $scope property is not explicitly set, it automatically has global scope.

Property Object Scopes

A component’s properties should always point to objects whose scope is equal to or greater than its own. Thus, global-scope component properties should only point to objects that also have global scope; session-scope component properties should only point to objects that have global or session scope; while request-scope component properties can point to objects of any scope, including request.