html```
<div ng-controller="EventController">
Root scope
<tt>MyEvent</tt>count:{{count}}
<ul>
<li ng-repeat = "i in [2,1]" ng-controller = "EventController">
<button ng-click="$emit('MyEvent')">
$emit('MyEvent')
</button>
<button ng-click="$broadcast('MyEvent')">
$broadcast('MyEvent')
</button>
<br>
Middle scope
<tt>MyEvent</tt>count:{{count}}
<ul>
<li ng-repeat="item in [1,3]" ng-controller="EventController">
Leaf scope
<tt>MyEvent</tt>count:{{count}}
</li>
</ul>
</li>
</ul>
</div>
js:
function EventController($scope) {
$scope.count = 0;
$scope.$on("MyEvent",function(){
$scope.count++;
})
}
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