AngularJS is
an open-source web application framework. It was originally developed in 2009
by Misko Hevery and Adam Abrons. It is now maintained by Google. Its latest
version is 1.6.4.
Defintion:-
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. AngularJS's
data binding and dependency injection eliminate much of the code you would
otherwise have to write. And it all happens within the browser, making it an
ideal partner with any server technology.
Features:-
The core
features of AngularJS are as follows:
·
Data-binding: It is the automatic synchronization of data between model and
view components.
· Scope:
These are objects that refer to the model. They act as a glue between
controller and view.
·
Controller: These are JavaScript functions bound to a particular scope.
·
Services: AngularJS comes with several built-in services such as $http to make
a XMLHttpRequests. These are singleton objects which are instantiated only once
in app.
· Filters:
These select a subset of items from an array and returns a new array.
·
Directives: Directives are markers on DOM elements such as elements,
attributes, css, and more. These can be used to create custom HTML tags that
serve as new, custom widgets. AngularJS has built-in directives such as ngBind,
ngModel, etc.
·
Templates: These are the rendered view with information from the controller and
model. These can be a single file (such as index.html) or multiple views in one
page using partials.
· Routing:
It is concept of switching views.
· Model View Whatever: MVW is a design
pattern for dividing an application into different parts called Model, View,
and Controller, each with distinct responsibilities. AngularJS does not
implement MVC in the traditional sense, but rather something closer to MVVM
(Model-View-ViewModel). The Angular JS team refers it humorously as Model View
Whatever.
· Deep
Linking: Deep linking allows to encode the state of application in the URL so
that it can be bookmarked. The application can then be restored from the URL to
the same state.
· Dependency Injection: AngularJS has a
built-in dependency injection subsystem that helps the developer to create,
understand, and test the applications easily.
Conceptual
Overview:-
Source (Angularjs.org)
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