IS_NULL Function

Checks if the object type is null.

Syntax

MEMBER FUNCTION is_null
    RETURN BOOLEAN;

Returns

True the object type has not been written to since initialization.

declare
    l_obj apex_t_javascript_object := apex_t_javascript_object();
begin
    sys.dbms_output.put_line( case when l_obj.is_null then 'true' else 'false' end );
    l_obj.open_object;
    l_obj.close_object;
    sys.dbms_output.put_line( case when l_obj.is_null then 'true' else 'false' end );
end;

Output:
    true
    false

Example

Verify if the object is null.