FB init function gives wrong version error

Question

I'm using the Facebook JS sdk, and I have created a new App today. Everything is configured properly. Using init function like:

window.fbAsyncInit = function() {     FB.init({       appId      : 'xxxx', // App ID       status     : false,        version:  'v2.0',       cookie     : true,        xfbml      : false  // parse XFBML     }); };      (function(d, s, id){          var js, fjs = d.getElementsByTagName(s)[0];          if (d.getElementById(id)) {return;}          js = d.createElement(s); js.id = id;          js.src = "//connect.facebook.net/pl_PL/sdk.js";          fjs.parentNode.insertBefore(js, fjs);        }(document, 'script', 'facebook-jssdk')); 

but I have an error: "Uncaught Error: init not called with valid version " Was trying also other versions like: 2.1, 2.2 and still no luck. What am I doing wrong here?

Answer 1

**Disclaimer - This is purely speculation. Seems to have solved my problem.

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I've had this issue on a recent project. I think this is a latency issue. The Facebook SDK requires that <div id="fb-root"></div> be on the page. This should be the first thing after the opening body tag. After this, you may see your initialization code.

For me, this issue was not consistent. I would occasionally see the bug and sometimes I would not. Thus, my conclusion of it being a latency problem. If the SDK cannot find the fb-root, then it must create one. Herein, is where I believe the latency issue exists.

Try adding this just after your opening body tag, but before your FB.init({});.

<div id="fb-root"></div> 

This seems to have solved the issue for me and will hopefully help others as well. The v1.0 documentation discusses the reason for fb-root, but the v2.0 docs make no mention of the item, likely because the init script will add it for you if it does not find it.

Answer 2

I got it working by using all.js instead of sdk.js.
In your case, it would look like:

js.src = "//connect.facebook.net/pl_PL/all.js"; 

instead of

js.src = "//connect.facebook.net/pl_PL/sdk.js";