GitHub Issues PJAX pagination

github_issues_pjax.js

$(function () {
  var loadedPages = [];

  console.log('Initializing GitHub Issues PJAX...');

  function group () {
    if (loadedPages.length) {
      return;
    }
    var currentPage = +$('.pagination > .current').text();

    $('.issues-listing > .table-list-issues').wrap('<div class="issues-pages-wrapper"><div class="issues-page base-page" data-page="' + currentPage + '"></div></div>');

    loadedPages.push(currentPage);
  };

  function inline (e) {
    var $currentTarget = $(e.currentTarget);
    var href = e.currentTarget.href;
    var loadPage = +$(e.currentTarget).text();

    if ($.inArray(loadPage, loadedPages) > -1) {
      return false;
    }

    group();

    e.preventDefault();
    e.stopImmediatePropagation();

    $.ajax({
      url: href,
      headers: {
        'X-PJAX': true
      },
      success: function (data) {
        var $page = $('<div class="issues-page" data-page="' + loadPage + '"></div>').append($(data).find('.table-list-issues'));

        if (loadPage === 1) {
          $('.issues-pages-wrapper').prepend($page);

          return;
        }

        var $pages = $('.issues-pages-wrapper').children();
        var pagesCount = $pages.length;

        $pages.each(function (i, el) {
          var $el = $(el),
              pageNo = $el.data('page');

          if (loadPage + 1 === pageNo) {
            $el.before($page);

            return false;
          }

          if (i === pagesCount - 1) {
            $('.issues-pages-wrapper').append($page);
          }
        });

        $currentTarget.replaceWith('<em class="current">' + loadPage + '</em>');
      }
    });

    return false;
  };

  $('.pagination a').not('.previous_page, .next_page').on('click', inline);
});