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Angular Controllers in Typescript


When a Controller is attached to the DOM via the ng-controller directive, Angular will instantiate a new Controller object, using the specified Controller's constructor function. A new child scope will be created and made available as an injectable parameter to the Controller's constructor function as $scope.

Controllers can be very easily made using the typescript classes.

module App.Controllers {
class Address {
 line1: string;
 line2: string;
 city: string;
 state: string;
 }
 export class SampleController {
 firstName: string;
 lastName: string;
 age: number;
 address: Address;
 setUpWatches($scope: ng.IScope): void {
 $scope.$watch(() => this.firstName, (n, o) => {
 //n is string and so is o
 });
 };
 constructor($scope: ng.IScope) {
 this.setUpWatches($scope);
 }
 }
}

The Resulting Javascript is


var App;
(function (App) {
 var Controllers;
 (function (Controllers) {
 var Address = (function () {
 function Address() {
 }
 return Address;
 }());
 var SampleController = (function () {
 function SampleController($scope) {
 this.setUpWatches($scope);
 }
 SampleController.prototype.setUpWatches = function ($scope) {
 var _this = this;
 $scope.$watch(function () { return _this.firstName; }, function (n, o) {
 //n is string and so is o
 });
 };
 ;
 return SampleController;
 }());
 Controllers.SampleController = SampleController;
 })(Controllers = App.Controllers || (App.Controllers = {}));
})(App || (App = {}));
//# sourceMappingURL=ExampleController.js.map

After making the controller class let the angular js module about the controller can be done simple by using the class

app


 .module('app')
 .controller('exampleController', App.Controller.SampleController)


Conclusion

In this page (written and validated by ) you learned about AngularJS Controllers in Typescript . What's Next? If you are interested in completing AngularJS tutorial, your next topic will be learning about: AngularJS http request.



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