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AngularJS — A Review

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The rising popularity of HTML5 has acted as a catalyst for the increased use of JavaScript frameworks for developing rich client applications. These frameworks allow developers to incorporate enterprise complexity in client-side applications. This is perhaps the reason why server side frameworks have become a thing of the past and applications, like AngularJS, Ember and BackBone, in addition to several others, are being used.

Although, this blog is not focused towards deriving comparisons between the different frameworks, here are a few ways by which AngularJS is better than the rest –

  • Efficient Code
  • Good documentation
  • Impeccable developer community
  • Google backed
  • Small footprint
  • Data-Binding is simple

The key features of Angular JS are discussed in the sections that follow.

Scope

Scope is used for detecting changes in model objects. Besides, it is also used for creating expressions’ execution contexts. It performs marshalling of the model to a view and events are forwarded to the controller.

Controller

In order to create a model and connect it to a view, a controller is required. Therefore, the interface between the controller and the view is scope. Typically, an application is effective and efficient if the controllers are thin and services are rich. The controller in AngularJS supports inheritance and nesting. The major difference between controller of AngularJS and other frameworks is that, in this case, DOM manipulations are not supported.

Model

The model in AngularJS can simply be described as a JavaScript object. There is no need for you to create structures or make extensions. This allows the framework to support the functionality of nested models.

View

The view, in this case, is not based on strings. In fact, it is based on DOM objects. This component is used for UI designing and ideally, should not include functional aspects. This framework provides the flexibility to the user to include multiple views in one controller.

Services

It is the services component of this framework that provides support for executing common task for web-based applications. It also allows the developer to allow sharing of functionality between multiple controllers. A service can be built using Factory, Service or $provide API.

Data Binding

The data binding provided by this framework is a two-way process, which binds the model and the view. This is made even easier by the automatic synchronization that AngularJS supports.

Directives

Directives can be used for creating new behaviors and transforming DOM. Besides, the HTML vocabulary can be extended using directives.

Filters

Data transformation can be easily performed using the filters that are available in the AngularJS framework.

Validation

This framework has an inbuilt validation mechanism that has been built around the HTML5 directives and input variables. Moreover, a custom validation can be created easily for the validation purpose.

Testable

One of the biggest concerns for enterprise solutions is testing. There are several methodologies that can be used for testing applications made using the AngularJS framework. Most commonly used procedures are Jasmine tests.

AngularJS is capable of quickening client-side development if you create your own custom AngularJS Plunker. Besides this, a clean documentation and strong community makes AngularJS is particularly good option.

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