underscore_fb_initializer_error.js

window.share_contest = function(){
  alert('sharing clicked');
  FB.ui({
      method: 'feed',
      app_id: $('body').data('app_id'),
      name: 'Title text',
      link: $('body').data('tab_url'),
      redirect_uri: $('body').data('app_url'),
      caption: 'Caption text',
      description: 'Description text',
      message: '',
      display: 'async'
    },function(resp){
      alert(resp);
    }
  );
}