AngularJS 1.5.x

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

app.controller('MainCtrl', function($scope) {
  $scope.name = 'World';
  
  $scope.sayHello=function(){
    return "Angular Scope Demo";
  }
});

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

<head>
  <meta charset="utf-8" />
  <title>AngularJS Scope Demo</title>
  <script>
    document.write('<base href="' + document.location + '" />');
  </script>
  <link rel="stylesheet" href="style.css" />
  <script data-require="angular.js@1.5.x" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.10/angular.min.js" data-semver="1.5.10"></script>
  <script src="app.js"></script>
</head>

<body ng-controller="MainCtrl">
  <p>Hello {{name}}!</p>

  <hr>
  <p>{{sayHello()}}</p>
</body>

</html>

/* Put your css in here */