javascript - 通过 FB.ui 分享到 Facebook
我正在尝试使用我基于显示“发布到动态”对话框的新文档编写的以下代码(https://developers.facebook.com/docs/javascript/reference/FB.ui),但我收到以下错误“ReferenceError: FB 未定义”
我使用的代码是我能想出的最简单的:
window.fbAsyncInit = function() {
FB.init({
appId : 'xxxxxxxx',
status : true,
xfbml : true
});
};
(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 = "http://connect.facebook.net/en_US/all.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
FB.ui({
method: 'feed',
name: 'Facebook Dialogs',
link: 'https://developers.facebook.com/docs/dialogs/',
picture: 'http://fbrell.com/f8.jpg',
caption: 'Reference Documentation',
description: 'Dialogs provide a simple, consistent interface for applications to interface with users.'
});
有什么想法吗?
编辑 1
如果我想在用户点击链接时打开对话框,我会使用 jQuery 的点击事件
$(".userActions a.facebook").click(function() {
FB.ui({
method: 'feed',
name: 'Facebook Dialogs',
link: 'https://developers.facebook.com/docs/dialogs/',
picture: 'http://fbrell.com/f8.jpg',
caption: 'Reference Documentation',
description: 'Dialogs provide a simple, consistent interface for applications to interface with users.'
});
});
或者将 FB.ui 放在一个接受参数的函数中,然后调用这个函数,例如
window.fbAsyncInit = function() {
FB.init({
appId : 'xxxxxxxx',
status : true,
xfbml : true
});
// Code in here will run once FB has been initialised
function FB_post_feed(method,name,link,picture,caption,description){
FB.ui({
method: method,
name: name,
link: link,
picture: picture,
caption: caption,
description: description
});
}
};
(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 = "http://connect.facebook.net/en_US/all.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
以及在 HTML 的某个地方
$(".userActions a.facebook").click(function() {
FB_post_feed('feed','Facebook Dialogs','https://developers.facebook.com/docs/dialogs/','http://fbrell.com/f8.jpg','Reference Documentation','Dialogs provide a simple, consistent interface for applications to interface with users.')
}
答案#1
好,你在那里犯了一些概念性的错误。
首先:
window.fbAsyncInit = function() {
FB.init({
appId : 'xxxxxxxx',
status : true,
xfbml : true
});
};
(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 = "http://connect.facebook.net/en_US/all.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
FB.ui({
method: 'feed',
name: 'Facebook Dialogs',
link: 'https://developers.facebook.com/docs/dialogs/',
picture: 'http://fbrell.com/f8.jpg',
caption: 'Reference Documentation',
description: 'Dialogs provide a simple, consistent interface for applications to interface with users.'
});
这应该做什么?在没有用户互动的情况下打开分享对话框?FB.ui 必须在分享对话框应该出现时调用,而不是在 Facebook AsyncInit 函数之后立即调用。
而且,如函数名所示,Facebook SDK 将会异步启动。这意味着在你放置函数的位置,FB 并不会被定义。
第二:
window.fbAsyncInit = function() {
FB.init({
appId : 'xxxxxxxx',
status : true,
xfbml : true
});
// Code in here will run once FB has been initialised
function FB_post_feed(method,name,link,picture,caption,description){
FB.ui({
method: method,
name: name,
link: link,
picture: picture,
caption: caption,
description: description
});
}
};
在这种情况下,FB_post_feed 函数是 fbAsyncInit 函数内部的本地函数。因此,你无法在 fbAsyncInit 外部访问 FB_post_feed 函数。
此外,FB.init 是异步的,这意味着在创建 FB_post_feed 时 FB 将是未定义的。
取决于你的 HTML 代码如何定义,以及这个标识符是否正确,代码
$(".userActions a.facebook").click(function() {
FB.ui({
method: 'feed',
name: 'Facebook Dialogs',
link: 'https://developers.facebook.com/docs/dialogs/',
picture: 'http://fbrell.com/f8.jpg',
caption: 'Reference Documentation',
description: 'Dialogs provide a simple, consistent interface for applications to interface with users.'
});
});
应该可以正常工作。不过,有个建议:类通常用来为某些东西设置样式。如果你使用按钮(或“a”元素)的 id,会是最佳做法。
答案#2
我遇到了同样的问题,并通过使用 jQuery 请求 Facebook 脚本,然后初始化它来解决:
function FB_post_feed(method,name,link,picture,caption,description){
FB.ui({
method: method,
name: name,
link: link,
picture: picture,
caption: caption,
description: description
});
}
$(document).ready(function()
{
$.getScript("http://connect.facebook.net/en_US/all.js#xfbml=1", function () {
FB.init({ appId: 'xxxxxxxx', status: true, cookie: true, xfbml: true });
});
});
