How to get end url?

Question

JavaScript

There is a URL like:
_ht_tps://oauth.vk.com/authorize?client_id=5238451&display=page&redirect_uri= https://oauth.vk.com/blank.html&scope=groups,video... You
need to request it via JAVASCRIPT, but this is how so that the user does not see and get the final URL of the form - _htt_ps://oauth.vk.com/blank.html/#access_token=
There was an option with an iframe, but it does not roll. The URL cannot be obtained. How can I do this?

Answer 1

this authorization option was not for nothing made only for standalone applications. otherwise, any site you visit could intercept access to your account and send messages and join / like you anywhere

Answer 2

No way.

Answer 3

No way.