Src the plugin, and then invoke it on the element that should trigger Facebook authentication.

<!DOCTYPE html> <html> <head> <script type= 'text/javascript' src= 'jquery.js' ></script> <script type= 'text/javascript' src= 'flogin.js' ></script> <script type= 'text/javascript' > $ ( function () { $ ( '#login' ). facebook_login ({ appId : 'YOUR-FACEBOOK-APP-ID' , # your facebook application id endpoint : '/sessions/new' , # where to POST the response to onSuccess : function ( data ) {}, # what to do on success , usually redirect onError : function ( data ) {} # what to do on error permissions : 'read_stream' # what permissions you need , default is just email }); }); </script> </head> <body> <a href= '#' id= 'login' > Login with Facebook </a> </body> </html>