ASC LAST page adjustment Part 2

// ==UserScript==
// @name            ASC adjust to last page on display of posts. Part #2
// @namespace       bubo-bubo/gmscripts
// @description     ASC - Add last page button on list pages
// @include         https://discussions.apple.com/message/*
// @include         https://discussions.apple.com/thread/*
// @version         1.0
// @grant           none
// ==/UserScript==

/* We may not end up on the last page of a display of posts when Apple hosts
 deleted some posts.

 https://discussions.apple.com/thread/5469616?start=1020&tstart=0&begin=yes

 How the input web address is contructed.
        constructedLink = "https://discussions.apple.com/thread/" +
                          postNumber +
                          "?start=" +
                          lastPageStart +
                          "&tstart=0&begin=yes";

 */

var debug                   = 0;  // 0 -- no debug
                                  // 1 -- normal debug
                                  // 2 -- intense debug


var aDate = new Date();
console.log ("--> adjustLastPage: add fast links. Debug is  " + debug +
             " on " + aDate );

// Setup once page is loaded.
if (debug)  console.log('Loaded; Now, initializing');


var url = window.location.href;
var params = url.split('?');

if (debug) console.log("web page parms " + params[1]);


// See if we have already adjusted this page.
    try
    {
      pageStatus = Window.asc_jx_last_page_load_remember;

     }// End of try
    catch(err)
    {
       console.log("looking for variable pageStatus " + err.message );
       return;
    }
if (debug) console.log("pageStatus is " + pageStatus);


myPassVar = getURLParameter('begin');
if (debug) console.log("begin parm is " + myPassVar);

// Do we need to see if we need to adjust to the last page?
if ( myPassVar == "yes" && pageStatus != "yes")
  {
    // Global remember, so we can check if we already adjusted this page
    Window.asc_jx_last_page_load_remember = "yes";

    if (debug>= 2) console.log("Have set Window.asc_jx_last_page_load_remember to  " +
                           Window.asc_jx_last_page_load_remember);
    currentPageStart = getURLParameter('start');
    if (debug) console.log("start parm is " + currentPageStart);

    // Check what page we are on.
    var pageNumbers =  $("span.current-page").text();
    if (debug) console.log("pageNumbers " + pageNumbers);

    // Ejaz explans how to pull words from a string
    //   in  http://stackoverflow.com/questions/16223043/get-second-and-third-words-from-string
    // The technique using split() will fail if the string has multiple spaces in it.
    // Don't forget to check your array length using .length property to avoid
    //   getting undefined in your variables.
    var actualPages = pageNumbers.match(/\S+/gi);
    if (debug) console.log("closer "+ actualPages);

    var currentPage = parseInt(actualPages[1]);
    var lastPage = parseInt(actualPages[3]);
    if (debug) console.log("current page is " + currentPage.toString() );
    if (debug) console.log("last page is " + lastPage.toString() );

    // If the current page is differernt than the last page, apple removed some post
    // and we need to adjust to last page.
    if ( currentPage != lastPage )
      {
        if (debug) console.log("mismatched pages ");
        // Adjust to the last page.
        // Handy dandy ASC function is used when user clicks on last button, so use it
        jspaginate.init('last', actualPages[3]);

        if (debug) console.log("Page adjusted! " );
      }
  }
else
  {
    if (debug) console.log("... Nothing to do! ...");
  }


// Seems that javascript [ or someone ]
// sends the last value from an assignment statement as the return code to the caller.
done = 0;

// ----------------------------------------------------------------------------------------
//
// http://stackoverflow.com/questions/11582512/how-to-get-url-parameters-with-javascript
//
// example:
//   myvar = getURLParameter('myvar');

function getURLParameter(name) {
  return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search) ||
                            [null, ''])[1].replace(/\+/g, '%20')) || null;
}