Bookmarklet: Add Facebook App to Facebook Page

addAppToPage.js

/*
  Bookmarklet Ready Code:
 
  javascript:(function(){var h=document.location.href;var regex=/http(s?)\:\/\/developers\.facebook\.com\/x\/apps\/(\w*)/;var appid=h.match(regex)[2];var u='https://www.facebook.com/dialog/pagetab?redirect_uri=http://www.facebook.com/&app_id='+appid;window.location.href=u;})();

*/

var h = document.location.href;
var regex = /http(s?)\:\/\/developers\.facebook\.com\/x\/apps\/(\w*)/;
var appid = h.match(regex)[2];
var u = 'https://www.facebook.com/dialog/pagetab?redirect_uri=http://www.facebook.com/&app_id='+appid; 

window.location.href = u;