Use this code it works
FB.init({appId: "Your AppId",show_error:true, status: true, cookie: true}); function postToFeed() { // calling the API ... var obj = { method: 'feed', link: 'https://developers.facebook.com/docs/reference/dialogs/', picture: 'http://fbrell.com/f8.jpg', name: 'Facebook Dialogs', caption: 'Reference Documentation', description: 'Using Dialogs to interact with users.' }; FB.ui(obj, callback); } function callback(response) { } 