FB.event.subscribe('comment.create') doesn't work

Question

I am trying to get a notification when an user comments using the social plugin. The code is as following:

<fb:comments href='someurl' width='400'></fb:comments>
FB.Event.subscribe('comment.create', function(response)
{
 alert(response);
}

Simple, but it's not working. Someone got some possible errors? From my research online, it seems as if the notification has no real consistency. Sometimes it works, sometimes it doesn't.

Answer 1

Add the notify="true" attribute to the fb:comments tag.

<fb:comments notify="true" href='someurl' width='400'></fb:comments>
FB.Event.subscribe('comment.create', function(response)
{
 alert(response);
}

Answer 2

why not to close the function call?

FB.Event.subscribe('comment.create', function(response)
{
  alert(response);
});

Answer 3

I was having the same issues until I stumbled upon this answer here:

Methods subscribed via FB.Event.subscribe to comment.create or comment.remove are not triggered

You should put everything related to FB.[...] functions (FB.init, FB.Event.suscribe, ...) in

window.fbAsyncInit = function(){ // Your code });

Otherwise your code will be parsed before the FB js sdk has been fully loaded and you will >never really suscribe to your event

That might be obvious to a lot of people but for me and others who are new to this that might trip you up.