AngularJS is a structured JavaScript framework for dynamic one-page applications. As a framework, it uses code templates written in HTML to execute certian functions or commands. The data binding and dependency functionality of AngularJS saves time when writing long code. All these functions are combined in one browser, making it an appropriate server technology.

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There is a significant difference between static documents and dynamic applications. Dynamic applications typically use a library and a framework that supports the creation of Web applications. While the library contains a number of functions that are used to perform certain operations, the framework automatically takes over the data and calls the functions as needed. However, AngularJS creates new HTML constructs that effectively eliminate this imbalance. It creates a new syntax using directives.

Concepts of AngularJS.

A few aspects you should know before starting with AngularJS:

  • Modules – a module can be defined as a container consisting of several application parts. The module is a set of functions defined in a JavaScript file. The module divides an application into small and reusable components.
  • Directives – Directs instruct the compiler to assign a behavior to the DOM element or to change it. AngularJS contains several directives such as ng-app, ng-controller, ng-views, ng-if etc.
  • Expressions – AngularJS expressions are expressed with {{}}, which indicates a data binding in HTML. These expressions can be inserted into the HTML templates. Expressions do not support control flow statements while they support filters.
  • Controller – It is a JavaScript object constructor function that controls the AngularJS applications.
  • Scope – It is a JavaScript object that serves as a bridge between the controller and the view. It is the source of the data in AngularJS. Any data manipulation and mapping is done using the Scope object.
  • Data binding – It coordinates the model and the view of any changes made to either model.
  • Validations – Validations are performed using AngularJS forms and controls.
  • Filters – These allow you to view the formatting of data in the DOM and extent the behavior of statements and binding expressions. Filters format the values or apply them.
  • Routing – The $routeProvider service performs the routing operations. It divides the map into different views. It helps to split the single page applications into different views.
  • Dependency Injection – It is a design pattern used to handle the dependencies of different components of a software. It allows the development of loosely structured architectures.
  • Test – The codes developed by Dependency Injections are tested. Some of the popular test frameworks such as Jasmine and Karma are two widely used technologies.

Advantages of AngularJS.

The following are reasons for the increasing popularity of AngularJS:

  • Simple Language – Learning and working with AngularJS is easy because you can realize the benefits of AngularJS is no time with a few simple modifications.
  • Two-Way Data Binding – AngularJS allows you to perform a two-day data binding that allows the view and model to be coordinated with the changes.
  • No Need for observable Functions – With AngularJS, you don`t have to use observable functions because it analyzes the DOM and creates the bindings based on angle-specific element attributes. This saves time when writing long codes.
  • Automatic Component Connection – The framework requires developers to split the application into several small MVC components and write code to reconnect them.

However, AngularJS solves this problem by automatically combining the components.

Disadvantages of AngularJS:

  • Not secure – AngularJS applications are not secure. Server-side authentification and authorization is necessary to keep an application secure.
  • Not degradable – If the user of your application disables JavaScript, it will display nothing but the base page.
  • Sometimes complex – Sometimes AngularJS becomes complex to use because there are several ways to do the same thing. This creates confusion and requires considerable effort.


AngularJS was originally developed in 2009 by Misko Hevery at Brat Tech LLC. It is now maintained by Google. Release 1.4.8 from 19.11.2015 is the most stable version available.

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