angular

$emit,$broadcast,$on的用法

 ng-controller="ParentCtrl as parent" class="ng-scope">
  {{ parent.data }}
   ng-controller="SiblingOneCtrl as sib1" class="ng-scope">
      {{ sib1.data }}
  

app.controller('ParentCtrl',
  function ParentCtrl ($scope) {

  $scope.$broadcast('parent', 'Some data'); // going down!

});

app.controller('SiblingOneCtrl',
  function SiblingOneCtrl ($scope) {

  $scope.$on('parent', function (event, data) {
    console.log(data); // 'Some data'
  });

});

app.controller('ParentCtrl',
  function ParentCtrl ($scope) {

  $scope.$on('child', function (event, data) {
    console.log(data); // 'Some data'
  });

});

app.controller('SiblingOneCtrl',
  function SiblingOneCtrl ($scope) {

  $scope.$emit('child', 'Some data'); // going up!

});

 ng-controller="ParentCtrl as parent" class="ng-scope">
   ng-controller="SiblingOneCtrl as sib1" class="ng-scope">

ng-controller="SiblingTwoCtrl as sib2" class="ng-scope">