使用“使用JavaScript SDK登录网页”，我有一个工作正常的登录按钮，即用户登录确定。（https://developers.facebook.com/docs/facebook-login/web#loginbutton）。
但是，在刷新页面之前，按钮不会更改为“注销”按钮。刷新后，将显示注销按钮，单击时将按预期恢复为登录按钮。以下是可以在IIS中运行的完整代码。我把它放在我的默认网站上并调用http://localhost/aspnet_client/system_web/4_0_30319/test.html。
注意：将应用ID添加到其中，在此处添加您的应用ID。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<link href='http://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
</head>
<body>
<div class="row margin-bottom-small">
<div id="login-button" class="fb-login-button" data-max-rows="1" data-size="xlarge" data-show-faces="false" data-auto-logout-link="true" onlogin="checkLoginState();"></div>
<div id="status"></div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.2/angular.min.js"></script>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
<script>
function statusChangeCallback(response) {
console.log('statusChangeCallback');
console.log(response);
if (response.status === 'connected') {
testAPI();
}
}
function checkLoginState() {
FB.getLoginStatus(function(response) {
statusChangeCallback(response);
});
}
window.fbAsyncInit = function() {
FB.init({
appId : 'ADD YOUR APP ID HERE',
cookie : true, // enable cookies to allow the server to access the session
xfbml : true, // parse social plugins on this page
version : 'v2.8' // use graph api version 2.8
});
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>
</body>
</html>
FB代码来自https://developers.facebook.com/docs/facebook-login/web#example
我不想以编程方式刷新页面。它是一个单页面应用程序，刷新页面将带我到一开始。
感谢。
答案 0 :(得分：0)
好吧，我无法弄清楚为什么它不会自动刷新 - 也许是设计的。这是我的解决方法 - 基本上添加注销按钮并自己调用FB.logout。如果来自Facebook开发团队的人可以提供更优雅的解决方案，我很想知道。感谢。
注意：将应用ID添加到其中，在此处添加您的应用ID。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<link href='http://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
</head>
<body>
<div class="row margin-bottom-small">
<div id="login-button" class="fb-login-button" data-max-rows="1" data-size="small" data-show-faces="false" data-auto-logout-link="false" onlogin="checkLoginState();"></div>
<div hidden id="logout-button" class="fb-login-button" data-max-rows="1" data-size="small" data-show-faces="false" data-auto-logout-link="false" onlogin="logout();">Log Out</div>
<div id="status"></div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.2/angular.min.js"></script>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
<script>
function statusChangeCallback(response) {
console.log('statusChangeCallback');
console.log(response);
if (response.status === 'connected') {
testAPI();
} else {
// The person is not logged into your app or we are unable to tell.
//document.getElementById('status').innerHTML = 'Please log into this app.';
document.getElementById('login-button').style.display = 'block';
document.getElementById('logout-button').style.display = 'none';
}
}
function checkLoginState() {
FB.getLoginStatus(function(response) {
statusChangeCallback(response);
});
}
function logout() {
FB.logout(function (response) {
document.getElementById('logout-button').style.display = 'none';
document.getElementById('login-button').style.display = '';
document.getElementById('status').innerHTML = 'You have been logged out!';
});
}
window.fbAsyncInit = function() {
FB.init({
appId : 'ADD YOUR APP ID HERE',
cookie : true, // enable cookies to allow the server to access the session
xfbml : true, // parse social plugins on this page
version : 'v2.8' // use graph api version 2.8
});
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('login-button').style.display = 'none';
document.getElementById('logout-button').style.display = 'block';
document.getElementById('status').innerHTML = 'Thanks for logging in, ' + response.name + '!';
});
}
</script>
</body>
</html>