Monday, 28 December 2015
Monday, December 28, 2015
What is Two way Data binding in AngularJS?
One of the Core Feature of AngularJS which makes it popular is two way data binding. In two way data binding, any changes to the model are immediately reflected in the View and any changes in the View updates the model.
Example:
One of the Core Feature of AngularJS which makes it popular is two way data binding. In two way data binding, any changes to the model are immediately reflected in the View and any changes in the View updates the model.
<!DOCTYPEhtml>
<htmlxmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<scriptsrc="Script/angular.js"></script>
<scripttype="text/javascript">
var myApp = angular.module('myApp', [])
.controller('myController', function ($scope) {
$scope.name = "Anoop";
});
</script>
</head>
<bodyng-app="myApp">
<divng-controller="myController">
Enter Name:<inputtype="text"ng-model="name"/>
<p>Hello! {{name}}
</div>
</body>
</html>
|
Preview:
I hope you like it.Thanks.
[Download Source Code via Google Drive]
Sunday, 13 December 2015
Sunday, December 13, 2015
In this Article, we will see the role of Modules, Controllers, $scope in AngularJS Application.
In previous AngularJS Tutorials Series, We saw
Module in AngularJS applications is a container for controllers, directive, filters, services etc and helps in packaging code as reusable modules.
Creating/Defining a Module:
The first parameter in angular.module() function is the name of the module and the second parameter is an array in which we can add dependencies. Here, we have not added any external modules/Dependencies as we are trying to make this example as simple as possible.
In the above code, We have added a controller with our angular module(i.e. myApp) using Controller method of the module. In Controller method, the first parameter is name of the controller and second is function representing the controller.
$scope acts as a glue between application controller and the view. $scope is dynamically injected into controller's function. We have added some data to $scope properties.
Here, we have added our module and controller in View using ng-App and ng-controller directive of AngularJS.
<!DOCTYPEhtml>
<htmlxmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Working with Controller</title>
<scriptsrc="Script/angular.js"></script>
<script>
// Declare a module
var myApp = angular.module('myApp', []);
//Registering a controller in myApp module
myApp.controller('myController', function ($scope) {
$scope.Name = "Anoop Kumar Sharma";
$scope.Website = "www.ittutorialswithexample.com";
});
</script>
</head>
<bodyng-app="myApp">
<divng-controller="myController">
Name:{{Name}}<br/>
Website:{{Website}}
</div>
</body>
</html>
|
Preview:
Let's move the entire <script> to new file i.e. controller.js and add reference of that script after the angular script.
Example2.html
<!DOCTYPEhtml>
<htmlxmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Working with Controller</title>
<scriptsrc="Script/angular.js"></script>
<scriptsrc="Script/controller.js"></script>
</head>
<bodyng-app="myApp">
<divng-controller="myController">
Name:{{Name}}<br/>
Website:{{Website}}
</div>
</body>
</html>
|
// Declare a module
var myApp = angular.module('myApp', []);
//Registering a controller in myApp module
myApp.controller('myController', function ($scope) {
$scope.Name = "Anoop Kumar Sharma";
$scope.Website = "www.ittutorialswithexample.com";
});
|
Hope you like it. Thanks.
[Download Source Code via Google Drive]
Sunday, 6 December 2015
Sunday, December 06, 2015
AngularJS is a Superheroic Javascript MVW Framework for building Single Page Application (SPA) and dynamic apps. Here MVW stands for Model View Whatever(that may be Model View Controller architecture or Model View View-Model architecture or MV*). AngularJS is developed and maintained by Google.
In this tutorial Series, We will cover the following topics:
Let's create our first Hello World application using AngularJS:
Go to https://angularjs.org/ and click on the Download button.
After that, a modal pop-up comes on screen. Under branch, Select 1.4x (stable) version and Select a uncompressed version of AngularJS which is best for debugging and development purpose (Select Minified version of the AngularJS for deploying your application but only if you can't use Google's CDN. The zipped version of the AngularJS contains both the builds of AngularJS, as well as documentation.)
Click on Download button.
Add Script folder in the root directory of your application and Add your downloaded Angular script in that folder.
If you are using Visual Studio IDE, then you can also add AngularJS in your application using Nuget Packets. Right click on your project from Solution Explorer and Click on Manage Nuget Packages.
Search for AngularJs in Manage Nuget Packages then Click on Install for installing/Adding AngularJS in your project.
Now Add angularjs script in your application. After that add ng-app directive in your application. ng-app directive can be added at document level or body level or at Div level. ng-app Directive defines angular application and used for loading various angularjs modules in the application. After that Add double curly brace notation {{ }} to bind expressions to elements is built-in Angular markup.
Code:
<!DOCTYPEhtml>
<htmlng-app>
<head>
<title>Angular Hello World Application</title>
<scriptsrc="Script/angular.js"></script>
</head>
<body>
{{4+4}}
</body>
</html>
|
Let's Create Hello World Application.
Add a textbox with ng-model directive. ng-model directive binds HTML control with a model/property which is used in Angular Application. We used ng-model property for displaying the value of HTML control with the help of {{name}} Template.
Code:
<!DOCTYPEhtml>
<htmlng-app>
<head>
<title>Angular Hello World Application</title>
<scriptsrc="Script/angular.js"></script>
</head>
<body>
<inputtype="text"ng-model="name"/><br/>
<p>Hello {{name}}!</p>
</body>
</html>
|
We can also do the same thing using ng-bind directive in our application. ng-bind directive binds the model value to the HTML control/View.
Code:
<!DOCTYPEhtml>
<htmlng-app>
<head>
<title>Angular Hello World Application</title>
<scriptsrc="Script/angular.js"></script>
</head>
<body>
<inputtype="text"ng-model="name"/><br/>
<p>Hello <spanng-bind="name"></span>!</p>
</body>
</html>
|
Thanks.
[Download Source Code via Google Drive]
