Facebook Asynchronous Like Button with Callback

I was struggling to get my Facebook like button to callback to allow for tracking when using an asynchronous method.

I came across this article that had the winning answer for me; posted by Dennis M.

What it turns out was my issue was that I was missing some parameters to the FB.Event.subscribe

Regardless, there doesn’t seem to be much information on the net about doing this asynchronous method; so thought I’d share to hopefully direct people in the right direction.