How to check if a user likes my Facebook Page or URL using Facebook's API

Question

I think I\'m going crazy. I can\'t get it to work.
I simply want to check if a user has liked my page with javascript in an iFrame app.

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Answer 1

You can do it in JavaScript like so (Building off of @dwarfy's response to a similar question):

  
    
    
  
  
    

    

    

      YOU DON'T LIKE ME :(
    

    

      YOU LIKE ME :)
    

  

Where the channel.html file on your server just contains the line:

There is a little code duplication in there, but you get the idea. This will pop up a login dialog the first time the user visits the page (which isn't exactly ideal, but works). On subsequent visits nothing should pop up though.