Angular-事件

<div ng-controller="ParentCtrl">                  //父级
    <div ng-controller="SelfCtrl">                //自己
        <a ng-click="click()">click me</a>
        <div ng-controller="ChildCtrl"></div>     //子级
    </div>
    <div ng-controller="BroCtrl"></div>           //平级
</div>

phonecatControllers.controller('SelfCtrl', function($scope) {
    $scope.click = function () {
        $scope.$broadcast('to-child', 'child');
        $scope.$emit('to-parent', 'parent');
    }
});

phonecatControllers.controller('ChildCtrl', function($scope){
    $scope.$on('to-child', function(d,data) {
        console.log(data);         //子级能得到值
    });
    $scope.$on('to-parent', function(d,data) {
        console.log(data);         //父级得不到值
    });
});

phonecatControllers.controller('ParentCtrl', function($scope) {
    $scope.$on('to-parent', function(d,data) {
        console.log(data);         //父级能得到值
    });
    $scope.$on('to-child', function(d,data) {
        console.log(data);         //子级得不到值
    });
});