<body ng-app='scopeExample1'>
<div ng-controller="MyController">
Your name:
<input type="text" ng-model="username">
<button ng-click='sayHello()'>Click!</button>
<hr>
{{greeting}}
</div>
</body>
angular.module('scopeExample1', [])
.controller('MyController', ['$scope', function($scope) {
$scope.username = 'World';
$scope.sayHello = function() {
$scope.greeting = 'Hello ' + $scope.username + '!';
};
}]);