title: Facebook social plugin doesn't working on internet explorer
body: <p>I'm new on facebook developer and i have created a page tab which contains a login using facebook php sdk (works on all browsers), and like button + feed dialog using facebook javascript sdk (works on all browsers -chrome, FF, safari- except IE).</p>
  
  <p>After 4h of research and tests, I have created a simple page test.html which displays a like button. When I opened it directly outside facebook it worked on all browsers except IE. The IE console shows no error message in this page test.</p>
  
  <p>I use IE 11 but when i emulated IE11- the problem is still here.
  Note 1 : in the code, i call window.fbAsyncInit and IE doesn't show the alert.
  Note 2 : the domain is in https</p>
  
  <p>The entire code of the page test.html :</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head lang="fr" xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml"&gt;
  &lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8" /&gt;
  &lt;title&gt;Untitled Document&lt;/title&gt;
  
  &lt;/head&gt;
  
  &lt;body&gt;
  &lt;a href="test.html"&gt;test&lt;/a&gt;&lt;br /&gt; &lt;!-- just shortcut to reload --&gt;
  &lt;div id="fb-root"&gt;&lt;/div&gt;
  &lt;script language="javascript" type="application/javascript"&gt;
    window.fbAsyncInit = function() {
        alert(1);       // IE only doesn't shwo this alert
          FB.init({
            appId      : 'XXXXXXXXXX',  // my api ID
            xfbml      : true,
            version    : 'v2.2',
            cookie     : true
          });
        };
  
        (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/fr_FR/sdk.js";
       //js.src = "//connect.facebook.net/fr_FR/debug.js";
       fjs.parentNode.insertBefore(js, fjs);
     }(document, 'script', 'facebook-jssdk'));
  &lt;/script&gt;
  &lt;div class="fb-like" data-href="https://www.facebook.com/naintrepides" data-layout="button_count" data-action="like" data-show-faces="true" data-share="false"&gt;&lt;/div&gt;
  
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>