How can I know if user posted something with share/like button?

Question

The goal is to know if user actually shared some content and if he did to reward him. It can be either share or like button, doesn't matter.

I did find the edge.create event in JS SDK but it's not good enough (as far as I tested), because the event is just after clicking like button, not when he actually posts the info on his wall or timeline.

I need to do it without asking for any permissions, if that's possible. Preferably using JS.

Answer 1

You can use the code here: redirect user after facebook share and publish

The share function

FB.ui({
      method: 'feed',
...

has a callback which you can use to suit your needs