label for (key , value) in object

選擇的是:{{ role1.name + '(' + role1.age + ')' }}

select as label for (key , value) in object

選擇的是:{{ role2 }}

label group by group for (key, value) in object

選擇的是:{{ role3.name + '(' + role3.age + ')' }}

select as label group by group for (key, value) in object

選擇的是:{{ role4.name + '(' + role4.age + ')' }}