angularJS $on event handler trigger order

Question

I was wondering two things, in the context of angularJS event handling.

1. How is defined the order in which handlers listening to the same event are triggered?

Answer 1

I'm a new user to Angular JS so please forgive if the answer is less than optimal. :P

If you require the order of the functions triggered by an event to be dependent (i.e., Function A then Function B) then might not creating a trigger function be better?

function trigger(event,data) {
    FunctionA(event,data);
    FunctionB(event,data);
}

$rootScope.on('eventTrigger',trigger);