AngularJS Introduction

AngularJS is a JavaScript framework. It can be added to an HTML page with a <script> tag.

AngularJS extends HTML attributes with Directives, and binds data to HTML with Expressions.

AngularJS is a JavaScript framework written in JavaScript.

AngularJS is distributed as a JavaScript file, and can be added to a web page with a <script> tag:

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>

AngularJS extends HTML with ng-directives.

The ng-app directive defines an AngularJS application.

The ng-model directive binds the value of HTML controls (input, select, textarea) to application data.

The ng-bind directive binds application data to the HTML view.

As you have already seen, AngularJS directives are HTML attributes with an ng prefix.

The ng-init directive initializes AngularJS application variables.

AngularJS expressions are written inside double braces: <code>{{ expression }}</code>.

AngularJS will "output" data exactly where the expression is written:

AngularJS modules define AngularJS applications.

AngularJS controllers control AngularJS applications.

The ng-app directive defines the application, the ng-controller directive defines the controller.

var app = angular.module('myApp', []);

AngularJS controllers control applications:

app.controller('myCtrl', function($scope) {
  $scope.firstName = "John";
  $scope.lastName = "Doe";
});