Facebook分享通过FB.ui

Question

我正在尝试使用我根据新文档编写的以下代码来显示"发布到源"对话框(https://developers.facebook.com/docs/javascript/reference/FB.ui)但我得到了以下错误" ReferenceError:FB未定义 "

我使用的代码是最简单的我可以提出:

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.'
    });

有任何想法吗？

编辑1

如果我想在用户点击链接时打开对话框,我将使用jquery click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.'
    });
});

或者在接受参数并调用此函数的函数内部使用FB.ui

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'));

在HTML中的某个地方

$(".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.')
}

Answer 1

好的,你在那里做过一些概念上的错误.

第一:

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.'
});

这该怎么办？无需用户交互即可打开共享对话框？当应该出现Share Dialog时,必须调用FB.ui,而不是在Facebook AsyncInit函数之后.

而且,facebook sdk将以异步方式启动,正如函数的名称所暗示的那样.这意味着FB不会在您放置功能的位置定义.

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函数内的本地函数.因此,您无权访问fbAsyncInit之外的FB_post_feed函数.

此外,FB.init是异步的,这意味着FB将在创建FB_post_feed时未定义.

根据HTML代码的定义方式以及此标识符是否正确,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.'
    });
});

应该工作正常.但是,只是一个建议:类通常用于设计一些东西.如果您使用按钮(或"a"元素)id,那将是最佳实践.