我在facebook上开发应用程序。如果他登录facebook，当他阅读我网站上的任何文章时，这个应用程序可以发布到用户墙上。一切正常，但我想做一些我希望我的应用程序检查用户是否登录到 facebook，如果不是，应用程序必须强制他登录到 facebook，然后他才能阅读任何文章。
<html>
<head>
<meta property="fb:app_id" content="452488354765730" />
<meta property="og:title" content="3eesho reading club" />
<meta property="og:type" content="website" />
<meta property="og:url" content="http://3eesho.com/fb/subhitest/test_PAGE" />
<meta property="og:site_name" content="3eesho.com" />
<meta property="og:image" content="http://ogp.me/logo.png" />
</head>
<body>
<script type="text/javascript">
function getCookie(c_name)
{
var i,x,y,ARRcookies=document.cookie.split(";");
for (i=0;i<ARRcookies.length;i++)
{
x=ARRcookies[i].substr(0,ARRcookies[i].indexOf("="));
y=ARRcookies[i].substr(ARRcookies[i].indexOf("=")+1);
x=x.replace(/^\s+|\s+$/g,"");
if (x==c_name)
{
return unescape(y);
}
}
}
function setCookie(c_name,value,exdays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate() + exdays);
var c_value=escape(value) + ((exdays==null) ? "" : "; expires="+exdate.toUTCString());
document.cookie=c_name + "=" + c_value;
}
function checkCookie()
{
var a=document.location.href;
var b=a.split("/");
var username=getCookie("username");
if (username==null || username=="")
{
alert("thank you for visit this Id:"+b[4]);
username=b[4];
myFunction();
setCookie("username",username,365);
}
else
{
alert("this Id visited:"+b[4]);
if(username!=b[4])
{
myFunction();
setCookie("username",b[4],365);
}
}
}
function myFunction()
{
var x;
var r=confirm("did you want to publish this article to your wall on facebook");
if (r==true)
{
x=alert("the article published!");
graphStreamPublish();
}
else
{
x=alert("the article doesn't publish!");
}
}
</script>
<script>
(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/all.js#xfbml=1&appId=452488354765730";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
//FB App Script
var button;
var userInfo;
window.fbAsyncInit = function() {
FB.init({ appId: '452488354765730',
status: true,
cookie: true,
xfbml: true,
oauth: true});
showLoader(true);
};
(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);
}());
//stream publish method
function graphStreamPublish(){
alert("graphStreamPublish");
showLoader(true);
FB.api('/me/feed', 'post',
{
message : "\u0642\u0631\u0627 \u0647\u0630\u0627 \u0627\u0644\u0645\u0642\u0627\u0644 \u0639\u0644\u0649 \u0639\u064A\u0634\u0648.\u0643\u0648\u0645",
link : document.location.href+'? utm_campaign=spring&utm_medium=referral&utm_source=exampleblog'+target="_blank",
},
function(response) {
showLoader(false);
if (!response || response.error) {
//alert('Error occured');
}
else
{
alert("Posted as "+response.id);
}
});
}
function showLoader(status){
if (status)
document.getElementById('loader').style.display = 'block';
else
document.getElementById('loader').style.display = 'none';
}
</script>
<a href="#" onclick="checkCookie()">Testing</a>
<div class="fb-login-button" data-show-faces="true" data-width="180" data-max-rows="1" scope="publish_actions"></div>
<div id="loader" style="display:none"></div>
</body>
</html>