Angular: Empty Fiddle

http://angularjs.org/

HTML

<script src="http://code.angularjs.org/angular-1.0.1.js"></script>
<div ng-app="myApp" ng-controller="myCtrl">
    Parent: <input type="text" ng-model="anObject.aProperty">
  <h1>{{ anObject.aProperty }}</h1>

  <div ng-controller="firstCtrl">
    Child: <input type="text" ng-model="anObject.aProperty">
    <h1>{{ anObject.aProperty }}</h1>
  </div>

  <div ng-controller="secondCtrl">
    Sibling Child: <input type="text" ng-model="anObject.aProperty">
    <h1>{{ anObject.aProperty }}</h1>
  </div>
</div>

JavaScript

var myApp = angular.module('myApp',[]);

myApp.controller("myCtrl",function($scope) {
    $scope.anObject={aProperty: "init"};
});
                 
myApp.controller("firstCtrl",function($scope) {});
myApp.controller("secondCtrl",function($scope) {});