我正在尝试在以下代码中使用 Facebook Javascript SDK,但是无论我将它放在 fbAsyncInit 的哪个位置,都不会显示警报...
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://ogp.me/ns/fb#">
<head>
</head>
<body>
<div id="fb-root"></div>
<script>
  window.fbAsyncInit = function() {
    FB.init({
      appId      : '205116556256919', // App ID
      channelUrl : 'http://lolkitten.org/', // Channel File
      status     : true, // check login status
      cookie     : true, // enable cookies to allow the server to access the session
      xfbml      : true  // parse XFBML
    });
    // Additional initialization code here
     alert('loading complete');
  };
  // 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>
<fb:like send="true" width="450" show_faces="true" />
</html>