Javascript SDK example

js_sdk.js

var facebook_tools = new function() {
  
  this.init   = function () {  
    if (FB.getSession() == null) {
      this.login();
    } else {
      facebook_session      = FB.getSession();
    }
    return this;
  };
  
  this.login  = function () {
    FB.login(function(response) {
      if (response.session) {
        // console.log(" --------- LOGGED INTO FB --------- ");
        return true;
      } else {
        // console.log(" --------- LOGIN FAILED --------- ");
        return false;
      }
    }, {perms:'publish_stream'});
  };
  
  this.logout  = function () {
    FB.logout(function() {return false});
  };
  
  this.invite_a_friend = function (canvas_url) {
    FB.ui({
      method: 'send',
      name: 'NFL Performance Challenge',
      link: canvas_url,
      description: "Lorem ipsum dolor sit amet, consectetur adipisicing elit.",
      picture: 'http://i.imgur.com/luTGA.png'
    });
  };
};