How to do sharing VK?

Question

JavaScript

Problem with simultaneous sharing and user authorization:

VK.init({apiId: ******});

           VK.Auth.login(function(loginInfo){

                if (!loginInfo || !loginInfo['session']) {
                    return false;
                }

                VK.Api.call('wall.post', {
                    message: document.title,
                    attachments: window.location.href
                }, function(postInfo) {

                    if(postInfo['error'] == undefined){
                        alert('Ура!');
                    } else {
                        alert('Не удалось сохранить информацию о посте.');
                    }

                });

            });

        });

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