<!DOCTYPE html>
<html>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="">
<form>
First Name: <input type="text" ng-model="firstname">
</form>
<h1>You entered: {{firstname}}</h1>
</div>
<p>Change the name inside the input field, and you will see the name in the header changes accordingly.</p>
</body>
</html>