FB init example

healthy.js

define( 'healthy', 
	['underscore', 'healthy/intro', 'healthy/quiz', 'healthy/results'],
	function( _, intro, quiz, results ) {
		
		var Healthy = {
			'publicFn': {
				'init': function( bodyClass ) {
					Healthy.privateFn.setup( bodyClass );
					Healthy.privateFn.onFacebookInit( function() {
						$( window ).trigger( 'FBInit' );
					} );
				}
			},
			'privateFn': {
				'setup': function( bodyClass ) {
					var elem = document.createElement('canvas'),
						canvasSupported = !!(elem.getContext && elem.getContext('2d'));
						
					// FOR TESTING
					// canvasSupported = false;
					
					// ghetto setup code activate!
					if ( bodyClass.match( 'intro' ) ) {
						intro.init( { 'canvasSupported': canvasSupported } );
					} else if ( bodyClass.match( 'quiz' ) ) {
						quiz.init( { 'canvasSupported': canvasSupported } );
					} else if ( bodyClass.match( 'results' )  ) {
						results.init( { 'canvasSupported': canvasSupported } );
					}
				},
				'onFacebookInit': function( callback ) {
					if ( !( 'FB' in window ) || !FB.apiDidInit ) {
						setTimeout( function() { Healthy.privateFn.onFacebookInit( callback ); }, 50 );
					} else {
						if( callback ) callback();
					}
				}
			}
		};
		
		return Healthy.publicFn;
	}
);

index.html

		<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript" charset="utf-8"></script>
		<div id="fb-root"></div>
		<script type="text/javascript">
			(function(d){
			var js, id = 'facebook-jssdk'; if (d.getElementById(id)) {return;}
			js = d.createElement('script'); js.id = id; js.async = true;
			js.src = "//connect.facebook.net/en_US/all.js";
			d.getElementsByTagName('head')[0].appendChild(js);
			}(document));
			window.fbAsyncInit = function() {
				FB.init( {
					appId			 : '147102975395246', // App ID
					channelUrl : '//healthiestyou.barbariangroup.com/channel.html', // Channel File
					status		 : true, // check login status
					cookie		 : true, // enable cookies to allow the server to access the session
					oauth			 : true, // enable OAuth 2.0
					xfbml			 : true	 // parse XFBML
				} );
				FB.apiDidInit = true;
			}
		</script>
		<script src="js/bin/healthy_you.js" type="text/javascript" charset="utf-8"></script>