我正在使用带有 facebook 应用程序的 Javascript sdk 为用户创建登录页面。FB.login 提示用户输入 facebook 用户名和密码。我已经保存了所有信息,例如 user_id、Access_token 和所有信息。但是,当用户注销时。我想登录 facebook 而无需再次重新输入用户名和密码。我想使用用户 ID 和访问令牌直接使用 javascript API 登录。
谢谢
function updateButton(response) {
button = document.getElementById('fb-auth');
userInfo = document.getElementById('user-info');
testbut = document.getElementById('test');
var rr = getResponse("user_profile.xml");
if(rr != null)
{
response = rr;
}
if (response.authResponse) {alert('me/permissions/?access_token='+
response.authResponse.accessToken);
FB.api('me/permissions/?access_token='+ response.authResponse.accessToken
,function(response)
{
for (var name in response) {
alert(response.data);
}
alert(response);
});
//user is connected
FB.api('/me', function(info) {
login(response, info);
});
button.onclick = function() {
FB.logout(function(response) {
logout(response);
});
};
} else {
//user is not connected
button.innerHTML = 'Login';
button.onclick = function() {
FB.login(function(response) {
if (response.authResponse) {
FB.api('/me', function(info) {
login(response, info);
});
} else {
//user cancelled login or did not grant authorization
showLoader(false);
}
},
{scope:'email,user_birthday,status_update,publish_stream,user_about_me'});
}
}
}
// run for the current status and whenerve it is changed
FB.getLoginStatus(updateButton);
FB.Event.subscribe('auth.statusChange', updateButton);
};
(function() {
var e = document.createElement('script'); e.async = true;
e.src = document.location.protocol
+ '//connect.facebook.net/en_US/all.js';
document.getElementById('fb-root').appendChild(e);
}());
function login(response, info){
if (response.authResponse) {
ajaxFunction(response);
var accessToken = response.authResponse.accessToken;
userInfo.innerHTML = '<img src="https://graph.facebook.com/' + info.id
+ "<br /> Your Access Token: " + accessToken;
button.innerHTML = 'Logout';
document.getElementById('other').style.display = "block";
}
}
function logout(response){
userInfo.innerHTML = "";
document.getElementById('debug').innerHTML = "";
document.getElementById('other').style.display = "none";
}