To control the flow of data AngularJS mainly relies on controllers. It is defined using ng-controller directive. Controller contain attributes, properties and functions.
Example of Controller:
<html>
<head>
<title>AngularJS Controllers</title>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
</head>
<body>
<h2>AngularJS Controllers</h2>
<div ng-app="ngApp" ng-controller="nameController">
First name: <input type="text" ng-model="name.firstName"><br><br>
Last name: <input type="text" ng-model="name.lastName"><br>
<br>
Full name: {{name.fullName()}}
</div>
<script>
var ngApp = angular.module("ngApp", []);
ngApp.controller('nameController', function($scope) {
$scope.name = {
firstName: "Mark",
lastName: "Taylor",
fullName: function() {
var nameObject;
nameObject = $scope.name;
return nameObject.firstName + " " + nameObject.lastName;
}
};
});
</script>
</body>
</html>- nameController defined with $scope as argument.
- $scope refers to the application which is to use the nameController object.
- $scope.name is property of nameController object.
- $scope.name object has two properties: firstName and lastName.
- $scope.name object has fullName function which return the concatenate name.
- When you type anything in first name and last name input boxes, Full name will be updated automatically.
