AngularJS hello world example

Angularjs is a web application framework which has gained lot of popularity in mobile and single page applications. It uses directive ng-app to represent root of the element. Here is a basic angular js hello world example.

<div ng-app="myApp">
  <label>Name:</label>
  <input type="text" ng-model="yourName" ng-init="yourName='Foo'">
  <hr>
  <b>Hello {{yourName}}!</b>
<div/>

<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.5.3/angular.min.js"></script>
<script type="text/javascript">
var module = angular.module("myApp", []);
</script>

Few points to note

1. Here is how the html looks when inspected in Chrome developer tools
   
2. Angularjs scans the whole page and looks for ng-app elements.
3. Note the presence of classes (ng-scope, ng-binding) angularjs has added.
4. We could have initialized yourName value in angularjs controller also.