如果您提前感谢您查看此问题!我正致力于从Facebook提取数据。
我正在尝试从Facebook中提取用户名,以便我可以在稍后阶段使用它,我在FB Root div中嵌入了以下代码。
我知道检索工作!但是我无法将其传递给函数returndata
我是相对较新的javascript你可以帮帮我吗?我已经尝试了一切
在那里有一个警告来检查它是否正在检索数据
<div id="fb-root"></div>
<script type="text/javascript">
$(document).ready(function()
{
var appId = "121070974711874";
// If logging in as a Facebook canvas application use this URL.
var redirectUrl = "http://apps.facebook.com/bggressive";
// If logging in as a website do this. Be sure to add the host to your application's App Domain list.
var redirectUrl = window.location.href;
// If the user did not grant the app authorization go ahead and tell them that. Stop code execution.
if (0 <= window.location.href.indexOf ("error_reason"))
{
$(document.body).append ("<p>Authorization denied!</p>");
return;
}
// When the Facebook SDK script has finished loading init the
// SDK and then get the login status of the user. The status is
// reported in the handler.
window.fbAsyncInit = function()
{
FB.init({
appId : appId,
status : true,
cookie : true,
oauth : true
});
FB.getLoginStatus (onCheckLoginStatus);
};
(function(d)
{
var js, id = 'facebook-jssdk'; if (d.getElementById(id)) {return;}
js = d.createElement('script'); js.id = id; js.async = true;
js.src = "//connect.facebook.net/en_US/all.js";
d.getElementsByTagName('head')[0].appendChild(js);
}(document));
function onCheckLoginStatus (response)
{
if (response.status != "connected")
{
top.location.href = "https://www.facebook.com/dialog/oauth?client_id=" + appId + "&redirect_uri=" + encodeURIComponent (redirectUrl) + "&scope=user_photos,friends_photos";
}
else
{
FB.api('/me', function(response)
{
PASON = response.username
alert(response.username)
});
}
}
});
function returndata()
{
get = PASON
return get
};
</script>
答案 0 :(得分:1)
我认为你在任何你不能做的随机点调用函数returndata()
。原因是 - 变量PASON
是异步赋值。因此,您必须以这样的方式编码,即在分配值后调用returndata()
!
对于您正在尝试使用函数returndata()
进行的操作并不十分清楚。但是,我希望你的概念现在很清楚。