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Angularjs architecture overview

AngularJS is an open-source web application framework to create RICH Internet Application (RIA). It is maintained by Google.
AngularJS is a JavaScript framework that binds HTML to JavaScript objects.

AngularJS definition from official documentation:

AngularJS is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly. Angular’s data binding and dependency injection eliminate much of the code you currently have to write. And it all happens within the browser, making it an ideal partner with any server technology.
AngularJS uses directives for extending the HTML attributes and expressions for binding data to HTML. We will discuss these concepts in detail in following tutorials.

Note: AngularJS is a library written in JavaScript and can be included in a web page before the closing body tag.


AngularJS architecture diagram:

angularjs architecture1

AngularJS core features:

1. Modules
2. Directives
3. Templates
4. Scope
5. Expressions
6. Data-Binding
7. MVC (Model, View & Controller)
8. Validations
9. Filters
10. Services
11. Routing
12. Dependency Injection
13. Testing

Advantages of AngularJS:

1. It provides the facility to create Single Page Application in a very clean and maintainable way.
2. It provides the data binding facility to HTML thus giving user a rich and responsive experience
3. Its code is unit testable.
4. It uses dependency injection.
5. It provides reusable components.
6. AngularJS uses pure html pages for view and JavaScript for controllers

Disadvantages of AngularJS:

1. Not Secure – As discussed earlier AngularJS is a JavaScript framework so the applications written in AngularJS are not safe. We have to provide server side authentication and authorization to create a secure application.
2. Not degradable − User will see the basic page only if JavaScript is disabled.

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