通过javascript注销Facebook

我正在和我的朋友开发一个简单的网络游戏。我已经使用FB提供的javascript sdk集成了facebook登录。基本上，网络游戏的第一个页面是main.html，我在其中使用Facebook提供的代码成功添加了一个Facebook按钮：

<script>

// This is called with the results from from FB.getLoginStatus().
  function statusChangeCallback(response) {

console.log('statusChangeCallback');
console.log(response);
// The response object is returned with a status field that lets the
// app know the current login status of the person.
// Full docs on the response object can be found in the documentation
// for FB.getLoginStatus().
if (response.status === 'connected') {
  // Logged into your app and Facebook.
  window.location.href = "mode.html";
} else if (response.status === 'not_authorized') {
  // The person is logged into Facebook, but not your app.
  document.getElementById('status').innerHTML = 'Please log ' +
    'into this app.';
} else {
  // The person is not logged into Facebook, so we're not sure if
  // they are logged into this app or not.
  document.getElementById('status').innerHTML = 'Please log ' +
    'into Facebook.';
}
}

// This function is called when someone finishes with the Login
// Button.  See the onlogin handler attached to it in the sample
// code below.
function checkLoginState() {
  FB.getLoginStatus(function(response) {
  statusChangeCallback(response);
});
}

window.fbAsyncInit = function() {
FB.init({
appId      : 'xxx',
cookie     : true,  // enable cookies to allow the server to access 
                    // the session
xfbml      : true,  // parse social plugins on this page
version    : 'v2.3' // use version 2.3
});

// Now that we've initialized the JavaScript SDK, we call 
// FB.getLoginStatus().  This function gets the state of the
// person visiting this page and can return one of three states to
// the callback you provide.  They can be:
//
// 1. Logged into your app ('connected')
// 2. Logged into Facebook, but not your app ('not_authorized')
// 3. Not logged into Facebook and can't tell if they are logged into
//    your app or not.
//
// These three cases are handled in the callback function.

FB.getLoginStatus(function(response) {
  statusChangeCallback(response);
});

};

// Load the SDK asynchronously
(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/en_US/sdk.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));

// Here we run a very simple test of the Graph API after login is
// successful.  See statusChangeCallback() for when this call is made.
function testAPI() {
  console.log('Welcome!  Fetching your information.... ');
FB.api('/me', function(response) {
  console.log('Successful login for: ' + response.name);
  document.getElementById('status').innerHTML =
    'Thanks for logging in, ' + response.name + '!';
});
}
 </script>
<fb:login-button scope="public_profile,email" onlogin="checkLoginState();">
 </fb:login-button>

登录成功后，该页面将被定向到另一个html页面。在那个html页面中，我尝试添加一个Facebook注销按钮。试了几个小时，都没有成功。获得的最常见错误类似于FB被低估。 最后，我决定下载一个FB logout按钮的.png，并将这个.png作为src图像包含进来，自己制作一个按钮，但仍然徒劳无功，相当令人沮丧

我在另一个html页面中包含的代码如下所示

<script>

// This is called with the results from from FB.getLoginStatus().  

window.fbAsyncInit = function() {
FB.init({
  appId      : 'xxx',
  cookie     : true,  // enable cookies to allow the server to access 
                    // the session
  xfbml      : true,  // parse social plugins on this page
  version    : 'v2.3' // use version 2.3
 });


// Load the SDK asynchronously
(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/en_US/sdk.js";
  fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));


 function fbLogout() {
      FB.logout(function (response) {
          //Do what ever you want here when logged out like reloading the page 
          window.location.reload();
      });
  } 

</script> 

<button id="fblogout" onclick="fbLogout();""><img src="src/logout_fb.png">                    </button>

---

我从Chrome控制台检索到的错误是未捕获引用错误：未定义fbLogout

您是否尝试使用插件页面上的启用注销按钮：

这将为您提供如下按钮：

<div 
  class="fb-login-button"
  data-max-rows="1" 
  data-size="medium" 
  data-show-faces="false" 
  data-auto-logout-link="true" />

---

如果您使用该代码，您将看到登录或注销按钮，具体取决于状态。这可以与用于Javascript的普通FB SDK一起使用。

为什么fbLogout出现在HTML注释中？您的意思是onclick=fbLogout？我在谷歌上搜索并找到了这种从html调用js函数的方法