Introduction to Angular Js

what is AngularJs?

AngularJS is a structural framework for the web-development of dynamic web application. It allows developers to utilize HTML as the template language and extend HTML to declare application components succinctly and explicitly, meaning you can write your software in JavaScript, but you specify the view in HTML.In this article writer will provide you an introduction to angular js

Key features

Model-View-Controller (MVC) architecture: AngularJS facilitates this by partitioning the problem into three related Components; model, View, and Controller with each having a clear role.

Data Binding: AngularJS automatically synchronizes records between the model and the view as a robot. In the MVC architecture, changes to the model are propagated into the view and conversely, changes to the view are also propagated to the model.

Dependency Injection: AngularJS deals with object creation and dependency issues, thereby making code easier to test and maintain.

Directives: New attributes that are not part of HTML but are included in the HTML syntax together with values or new elements that are part of the HTML language’s syntax.

Templating: Generates stochastic view of the HTML templates.

Routing: Responsible for the switching between individual views within a single-page application without a need to refresh the page.

RESTful API support: is capable of fluent integration with RESTful APIs.

How it Works

HTML structure: describe the general structure of your software and the use of HTML, including the AngularJS directives.

JavaScript logic: JavaScript is used to handle application logic: //Controllers controllers are created here: //models models are defined here:

Data Binding: In the application of angular JS, facts are synchronized between the model and view automatically.

Dependency Injection: AngularJS handles their dependencies and also allows them to be injected into additives.

Directives: expand the capabilities of HTML with custom elements and attributes.

Routing: Responsible for managing the transitions between various modes/ views.

Advantages

Increased development speed: Statistics show that both binding and dependency injection reduce development time to a larger extent.

improved Code Testability: The use of MVC architecture and dependency injection is beneficial in testing.

enhanced user Experience: It should also be noted that SPAs provide ‘clean’ and ‘responsive’ consumer satisfaction.

large and active Community: much support and assistance available.

Cross-browser Compatibility: AngularJS deals with move-browser matters.

Disadvantages

Steeper learning Curve: In this respect, one can note that mastering AngularJS will be more difficult than in case with different frameworks.

performance Overhead: May cause overall performance overhead for complex programs.

Digestive Complexity: AngularJS’s digest cycle could be regarded as a confusing one.

Summary

It is a strong approach that is useful for building the new dynamic web applications. It provides capabilities such as data binding, dependency injection, and directive to simplify the development. However, it has learning difficulties and ability performance issues, still, the benefits in terms of development rate, testability, and user experience make this framework popular among the developers.

Notice: Although AngularJS is still employed in some current applications, the latest is a new type of Angular (also known as Angular 2+). It results in enhanced performance, flexibility, and element-based architecture.