AngularJS Web Application Framework


AngularJS is a Java Script library that acts as a structural framework to develop dynamic web
applications. AngularJS is licensed under the Apache version 2.0 license. It is open source and free which can be used by most of the developers around the world. AngularJS uses HTML as the template language and extends HTML's syntax to develop components of web application clearly and easily. AngularJS follows Model View Controller (MVC) architecture so that developers can write client side applications using JavaScript in a clean way. AngularJS is a helpful web framework to develop Rich Internet Applications (RIA). AngularJS automatically handles JavaScript code suitable for each browser; it means that it is a cross-browser compliant framework. AngularJS can be used to maintain web applications easily and build large scale web applications with high performance.
Let’s take a look at the features of AngularJS,
Feature
Description
Data binding
Data binding is the process of synchronizing data between model and view components of MVC architecture automatically.
Scope
Scope considered as an object that refers to the model. It acts as a link between controller and view of MVC architecture.
Controller
Controllers are JavaScript functions attached to a particular scope.
Services
Services are singleton objects which are instantiated only at one time in an application. AngularJS consists of built-in services like $http.
Filters
Filters choose required items as a subset of items from an array and return a new array.
Directives
Directives are mainly used to create customized HTML tags and they act as markers on Document Object Model (DOM). AngularJS has built-in directives as well.
Templates
Templates are used to render view with data from the controller and model.
Routing
Routing used to switch views.
Deep Linking
Deep linking used to encode the state of application in the URL. Then application can be restored from the URL to the same state.
Dependency Injection
Built-in dependency injection subsystem helps the developer to create, understand and test the applications easily.


Advantages of AngularJS
§  AngularJS facilitates data binding to HTML increasing responsiveness of the application.
§  AngularJS facilitates to create clean and maintainable Single Page Application.
§  AngularJS facilitates unit testing of the code.
§  AngularJS facilitates to complete functions with short codes due to reusable components.
§  AngularJS applications run on different browsers and different operating systems.
Disadvantages of AngularJS
§  AngularJS applications are not secure because it uses only the JavaScript framework. To keep these applications secure, application should have server side authentication and authorization.
§  AngularJS applications are not degradable because if JavaScript is not supportive, then nothing displayed on the user interface except the basic page.

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