AngularJS $broadcast with multiple parameters

Documentation says:

'Optional one or more arguments which will be passed onto the event listeners'

$rootScope.$emit(event_name, p1, p2, p3);

Just put the parameters into an object:

$scope.$broadcast('event', { a: item1, b: item2 })

Then access them from the second argument to the callback:

$scope.$on('event', function(event, opt) {
 // access opt.a, opt.b
});

Or if using ES2015 syntax you can unpack the arguments:

$scope.$on('event', (event, {a,b}) => {
 // access them just as a, b
});