AngularJS 1.2.x

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

app.controller('MainCtrl', function($scope, $rootScope) {
  $scope.id = {
    root: $rootScope.$id,
    local: $scope.$id
  };
});

<!DOCTYPE html>
<html ng-app="plunker">

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
    <script data-require="angular.js@1.2.x" src="https://code.angularjs.org/1.2.28/angular.js" data-semver="1.2.28"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
    <p>Root scope {{id.root}}</p>
    <p>Local scope {{id.local}}</p>
  </body>

</html>

/* Put your css in here */