Facebook What is a Channel File?

Question

As the title states, my question is what is a channel file.

I am creating an Javascript program that connects to the user's Facebook account using OAuth.

There is an initialization script that looks as such

<div id="fb-root"></div>
<script>
// Additional JS functions here
window.fbAsyncInit = function() {
FB.init({
  appId      : 'YOUR_APP_ID', // App ID
  channelUrl : '//WWW.YOUR_DOMAIN.COM/channel.html', // Channel File
  status     : true, // check login status
  cookie     : true, // enable cookies to allow the server to access the session
  xfbml      : true  // parse XFBML
});

// Additional init code here

};

// Load the SDK Asynchronously
(function(d){
   var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
   if (d.getElementById(id)) {return;}
   js = d.createElement('script'); js.id = id; js.async = true;
   js.src = "//connect.facebook.net/en_US/all.js";
   ref.parentNode.insertBefore(js, ref);
 }(document));
</script>

So in the channelUrl what would I set that to? What does it mean? Thanks in advance!

Answer 1

You can find a description of the channel URL parameter below.

https://developers.facebook.com/blog/post/530/

It goes into detail on why you would want want to include the parameter, but below is really the most important part.

Asynchronous loading is another simple tactic that allows your page to load quickly without blocking the loading of other elements of your page.