Angular JS extends HTML with new attributes. Core Concepts : directives, expressions, templates, and data binding. AngularJS is a JavaScript framework. It is a library written in JavaScript. AngularJS is distributed as a JavaScript file, and can be added to a web page with a script tag.
For example :
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.26/angular.min.js"></script>
DIRECTIVES
The ng-app directive defines an AngularJS application.
The ng-app directive tells AngularJS that the <div> element is the "owner" of an AngularJS application
The ng-model directive binds the value of HTML controls (input, select, textarea) to application data.
The ng-model directive binds the value of the input field to the application variable name
The ng-bind directive binds application data to the HTML view.
The ng-bind directive binds the innerHTML of the <p> element to the application variable name.
The ng-init directive initialize AngularJS application variables.
*You can use data-ng-, instead of ng-, if you want to make your page HTML5 valid.
EXPRESSION
AngularJS expressions are written inside double braces: {{ expression }}.
AngularJS expressions bind data to HTML the same way as the ng-bind directive.
AngularJS will "output" data exactly where the expression is written.
CONTROLLER
The ng-controller directive defines the controller.
The controller code will execute when the page loads.
Angular JS goal is to simplify both development and testing of such applications by providing a framework for client-side model–view–controller (MVC) architecture, along with components commonly used in rich internet applications.
