AngularJS Directives
AngularJS uses double braces {{ }} as place holders for data.
AngularJS directives are HTML attributes with the prefix ng-
The ng-app directive initializes an AngularJS application.
The ng-init directive initializes application data.
Example
<div ng-app="" ng-init="message='Hello AngularJS!'">
<h1>{{ message }}</h1>
</div>
