<!DOCTYPE html>
<html>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<h1 ng-click="changeName()">{{firstname}}</h1>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.firstname = "John";
$scope.changeName = function() {
$scope.firstname = "Nelly";
}
});
</script>
<p>Click on the header to run the "changeName" function.</p>
<p>This example demonstrates how to use the controller to change model data.</p>
</body>
</html>