facebook share js

fb_share.js

        window.fbAsyncInit = function () {

            FB.init({
                appId: '875465364758712',
                version: 'v2.5'
            });

            FB.ui({
                        method: 'share_open_graph',
                        action_type: 'og.shares',
                        action_properties: JSON.stringify({
                            object: {
                                'og:url': 'http://emilkoryczan.pl', // your url to share
                                'og:title': 'Here my custom title',
                                'og:description': 'here custom description',
                                'og:image': 'http://dinoanimals.pl/wp-content/uploads/2013/09/Pies5.jpg'
                            }
                        })
                    },
                    // callback
                    function (response) {
                        if (response && !response.error_message) {
                            // then get post content
                            alert('successfully posted. Status id : ' + response.post_id);
                        } else {
                            alert('Something went error.');
                        }
                    });
        };