Forgiving in angularjs

HTML

<script src="https://code.angularjs.org/1.3.0/angular.js"></script>
<div ng-app="app"ng-controller="MainCtrl">
    Hello {{user.name}}
</div>

JavaScript

angular.module('app', [])
.controller("MainCtrl", function($scope){
   // $scope.user = {name: 'Ta Ly'}; //<--- uncomment to see difference.
});