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2013-05-15T11:58:40.683
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As I understand you need two things before running some code of yours. These are: <ol> <li>Your page needs to be ready.</li> <li>Facebook API JS is downloaded and initialized.</li> </ol> Unfortunately, I was not able to find an easy way to detect if Facebook API is fully initalized. (Since <code>FB.init</code> is async you can't assume lines bellow it works as init done.) As my experiment Facebook functions that have callback and are called after <code>FB.init</code> waits until async <code>FB.init</code> is completed. (Please note that <code>auth.statusChange</code> doesn't fire in some cases.) So does something like this work for you? You can use <code>allready</code> event of <code>window</code> for your needs. <pre><code><script type="text/javascript" src="https://connect.facebook.net/en_US/all.js"></script> <script type="text/javascript" charset="utf-8"> window.fbAsyncInit = function() { FB.init({appId: "238797476172233"}); FB.getLoginStatus(function(response) { /* at this point you know that you can use FB API's. */ $().ready(function() { /* at this point you also know that your document is ready. */ $(window).trigger("allready", [response]); }); }); FB.Canvas.setAutoGrow(); }; $(window).bind("allready", function() { /* optionally you can use e and response as function parameters */ alert("now I am sure that both page and FB API's are initialized. I can do anything in this callback!"); }); </script> </code></pre> JSFiddle: <a href="http://jsfiddle.net/ubenzer/5y6fF/" rel="nofollow">http://jsfiddle.net/ubenzer/5y6fF/</a> (I added JSFiddle URL to my dummy app's domain but if it doesn't work, check the console and notify me please.) Besides these, you don't have any "non-api way" to understand if Facebook is loaded as Ian commented out.
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1. POHow to detect when DOM and frame are loaded in a Facebook app?
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