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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Facebook Login JavaScript Example</title> | |
<meta charset="UTF-8"> | |
</head> | |
<body> | |
<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. | |
testAPI(); | |
} 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 : '598745043558427', | |
cookie : true, // enable cookies to allow the server to access | |
// the session | |
xfbml : true, // parse social plugins on this page | |
version : 'v2.1' // use version 2.1 | |
}); | |
// 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> | |
<!-- | |
Below we include the Login Button social plugin. This button uses | |
the JavaScript SDK to present a graphical Login button that triggers | |
the FB.login() function when clicked. | |
--> | |
<fb:login-button scope="public_profile,email" onlogin="checkLoginState();"> | |
</fb:login-button> | |
<div id="status"> | |
</div> | |
</body> | |
</html> |
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