Reasons to Adopt AngularJS to master Web Application Development

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Reasons to Adopt AngularJS to master Web
Application Development
Learn what you all need to know about AngularJS
with its powerful features and methodologies.
Oodles Technologies embraces AngularJS and are
best when it comes to web application
development.
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• New to AngularJS,, having doubts on its
  implementation and usage??
• Wondering why to switch from traditional MVC/SPA
  approach using pure JavaScript and KnockoutJS to
  the power pack combination of TypeScript and
  Angular ?
• Well then heres everything you need to
  understand and get started with AngularJS .

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• What is AngularJS ?
• AngularJs is an open source Javascript framework
  to organise and assist web applications and
  single page applications. In 2012 we witnessed
  rise of Javascript MVC frameworks and libraries
  including Backbone.js , Ember.js and Angular.js.
• AngularJS is created by Google to build single
  page applications which could be more
  architectured and maintainable. AngularJS is
  completely client-side and entirely JavaScript,
  so wherever Javascript runs AngularJS also runs.
  It is even less than 29kb making it highly
  minified and compressed. Angular is the next
  generation framework , in which every tool is
  designed such that it works with every other tool
  in an interconnected way.

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• Amazing Features of AngularJS
• Angular has some compelling features for not just
  the developers but for designers as well.
• 1. Two Way Data Binding
• It is the most crucial and useful feature of
  Angular. This feature is what all modern web apps
  are all about i.e Real Time. Two way binding
  permanently binds the view to the model and
  reduces refresh cycles, it also saves a
  considerable amount of code as previously 80 of
  code was dedicated to manipulating, traversing
  and listening to DOM . With data binding this
  code disappears and hence more concentration can
  be laid to application. Normally with change in
  model the DOM elements and attributes need to be
  manually manipulated to reflect the changes, it
  proves to be a complex process mainly when
  application grows in complexity and in size. But
  with two way data binding the synchronization
  between the DOM and the model is well taken care
  of.
• 2. HTML Template
• AngularJS doesnt rely on any rendering engine
  but uses browser parseable .html files for its
  partials. The HTML templates are parsed by the
  browser in the DOM. The DOM is now the input to
  the AngularJS compiler . Angular then traverses
  the DOM template for rendering called the
  Directives. The input here is bowser DOM and not
  the HTML string, this is the noticeable change
  between angular and all fellow frameworks.

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• 3. Directives
• Directives are stand alone reusable elements
  separated from the app . All DOM manipulations
  are performed by Directives. Directives are used
  to create custom HTML tags to serve as new custom
  widgets .With Directive you can create a new HTML
  tag or attribute and make it do anything you want
  . Directives are very unique, useful, powerful
  and reusable feature available only in angular.
  With Directives you can invent new HTML syntax
  that are specific to your application.
• 4. Dependency Injection
• Dependency Injection is an angular feature that
  enables developers to easily build, develop,
  test and manage applications . With this feature
  you merely ask for for the dependencies instead
  of making manually , it will provide you an
  instance for any service asked provided you add
  the service as a parameter to get access to this
  service.
• 5. Testing
• AngularJS is designed by keeping testability in
  mind such that angular applications can be tested
  easily as any Javascript code comes with a strong
  set of tests . Angular comes with a end to end
  test runner setup .

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• Reasons Web Developers should Use AngularJS
• AngularJS is a new Javascript framework by
  Google and is designed to make front end
  development easier . The popularity of single
  page applications and angular is flaming. Angular
  provides numerous concepts to to organize and
  manipulate the web applications .
• 1. Enabling a Parallel Workflow
• It enables a parallel workflow between designers
  and developers. For a project both designing and
  hard coded developing can go side by side. For a
  project that is estimated to be completed in 4
  months then by following the traditional
  sequential approach there would be dedicated 4
  months of design followed by 4 months of coding
  making it 8 months altogether. But XAML allows
  to work in parallel by agreeing upon an interface
  for a screen. Developers can work on grabbing the
  data and writing all properties and tests around
  them while designers can animate and manipulate
  until they reach their final desired design .
  Those not familiar with XAML it is a declarative
  XML based language to instantiate object graphs
  and set values. The reason XML became so popular
  is because they translate well to angular.

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• 2. Handling Dependencies
• AngularJS easily handles dependency injections ,
  angular lets you divide your app into modules
  that are initialized separately and having
  dependencies on each other. This enables you to
  test only the modules you want at once while also
  unfolding the ability to create end to end tests
  as well.
• Dynamic loading is used by single page
  applications to deliver native app feel, but it
  involves a lot of dependencies on various modules
  and services, angular organises these and even
  manages the lifetime of an object for you.
• 3. Declarative UI
• Having a declarative UI has many advantages
  associated with it. A structured UI is always
  easier to understand and manipulate. Without
  ,then by mere looking at the markup it cant be
  figured what UI will actually do. So its not
  apparent whether any translations and validations
  are taking place by looking at some form tags.
• But by declaring UI and by directly placing
  markup in HTML one can understand the extended
  markup angular provides. It makes it clear where
  and to what data is being bound to. With added
  tools like filters and directives the intent of
  UI is much clearer.

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• 4 . Development lt-gt Design Workflow
• This works very well with angular, markup can be
  added without breaking an application as it
  depends on a particular structure or id to locate
  element and do task. Even rearrangement of code
  is much easier as the corresponding code that
  binds with it also moves along.
• 5. Control to Developers
• AngularJS with directives enables to create new
  HTML elements and attributes. Directives can work
  as parallel, are testable, provides dependency
  injection giving developers controls and more
  importantly control over controls.
• 6. Single Page Application Support
• Single page applications are driving more
  attention towards themselves as they are far more
  responsive and feels like a native app in the
  web. Now more functionality is being moved to web
  and by rendering on client load to server is
  reduced and also minimizes network traffic as
  instead of sending a full markup page, a payload
  of data can be sent and then can be turned into
  markup at client side.
• AngularJS provides routing i.e to map a URL
  dynamically to loaded pages and also allows users
  to use in built browser controls to stand a SPA
  application.

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• 7. Flexibility with Filters
• Filters are standalone functions and filter the
  data before reaching the view, it can involve
  formatting decimal places or reversing an array
  or simply implementing pagination. Filters are
  separate from app just like directives and are so
  resourceful that creation of a sorted HTML table
  is possible with filters without writing any
  Javascript.
• 8. Lesser Code
• With AngularJS you have to write less code as
  there aint any need to write your own MVC
  pipeline. The view defined by HTML is also much
  concise , with data binding manually putting data
  into view is not required. Directives are
  separate from app and enables to be written by
  separate team in parallel with minimum
  integration issues. With filters you can
  manipulate data without changing controls on view
  level.
• These fundamental features and principles will
  let you create a performance driven, maintainable
  , extensible and efficient front end codebase .
  AngularJS provides a rich experience to the end
  user, it is a robust and well maintained
  Javascript framework suitable for any
  professional web development .

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