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Why AngularJS Rocks?

January 12, 2015

AngularJS can be described as what HTML would have been in case it was meant for developing applications. A structural framework meant for creating dynamic web apps, AngularJS enables the use of HTML as the template language. It can be used to extend HTML’s syntax, so that application components can be expressed more clearly. With essential features such as data binding and dependency injection, AngularJS eliminates the need to write a lot of unnecessary code. Moreover, everything can be achieved within the browser, something that makes it suitable for most of the available server technologies.

To reduce the impedance mismatch occurring between dynamic apps and static documents, AngularJS utilizes a novel approach that involves the creation of new HTML constructs. It tells the browser about new syntax by utilizing specific directives. Some examples include:

  • Data binding
  • DOM control structures meant for repeating or hiding DOM fragments
  • Inbuilt support for forms and their validation
  • Adding new behavior to DOM components, for example, DOM event handling
  • Transforming HTML into reusable components

A complete client-side solution

AngularJS is not just a part of the overall structure that forms the client-side of a specific web application. Rather, it takes care of all the DOM and AJAX glue code and places it in a clearly defined structure. While this may narrow the boundaries in terms of how the application should be developed, it is not something that would be too difficult to manage. And when we consider some of Angular’s extraordinary features, as listed below, we would definitely realize its worth.

  • All the tools needed to develop a CRUD app are made available – form validation, data-binding, routing, basic templating directives, dependency injection, reusable components
  • Wide range of testing options – end-to-end testing, unit testing, mocks, test harnesses
  • Ability to seed application with test scripts and directory layout

Some key advantages

AngularJS was built on the basic idea that declarative code is more effective for creating UIs and grouping software components together, whereas imperative code is more useful for business logic. Let’s see why AngularJS scores better over other frameworks.

  • It makes good coding sense to keep DOM manipulation separate from app logic. When this is achieved, it makes code testing a lot more effective and accurate.
  • It is also wise to give the same importance to app testing, as is given to app writing. The level of difficulty attached to testing is directly related to the structure of the code.
  • It is good to keep the client side of an app separate from the server side. In this manner, development work can proceed in parallel, all while enabling the reuse of both sides.
  • It is really a boon for developers, if the framework helps them all throughout the process of developing an app – right from creating the UI to defining the business logic and testing.

AngularJS offers all these advantages and much more.

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