From my website, the user click on a share link. Then it opens the Facebook sharer in a new window using this URL: https://www.facebook.com/sharer/sharer.php?u=anyurl.com
There is possible to know if user clicks on SHARE button or just closed the sharer window? I know that is possible to check if window was closed, but there is possible to detect click button from another window using remote URL?
Thank you.