How to use $rootScope.$on to register a listener?

[Siyuan Wang]

I have looked through the api doc from Dash of my mac, the doc only shows that 

The event listener function format is: function(event, args...)

which doesn't explain what the "args" is!  That means nothing for me. 

Where can I find the exact format of the listener function?

[Kamal]

Siyuan,

"args" are the arguments which are passed to the $emit/$broadcast methods which invoke the methods registered using the $on. Let's see an example

$scope.$emit('myevent', "First Name", "Last Name", 3, "Test"); -> To Emit

$scope.$on('myevent', function(event, fname, lname, role, extra) {

  // fname -> "First Name"

  // lname -> "Last Name"

  // role -> 3

  // extra -> "Test"

});

this can be either $rootScope or any scope.