Load content on return?

Question

AJAX

Hello, when you open any link, Loader is shown and the header is in place, and the content of everything in id="contnet" is loaded and the page is not reloaded.
link example

<a href="<?php echo $wo['user']['url']; ?>" data-ajax="?link1=timeline&u=<?php echo $wo['user']['username'];?>">

But as soon as you click in the browser to go back, the page starts reloading and this is much longer than opening it
QUESTION
how to bind the same actions to return as opening links,
please help with the implementation or give some tips
ps we all once studied)))
Code for opening links via ajax

var box = $('#contnet');
           var ISAPI = $('#ISAPI').val();
           
           $(document).on('click', 'a[data-ajax]', function(e) {
              $('body').removeAttr('no-more-posts');
              if ($('.postText').length) {
                   if ($('.postText').val().length > 0) {
                      if (!confirm("<?php echo html_entity_decode($wo['lang']['havent_finished_post'], ENT_QUOTES)?>")) {
                         return false;
                      } else {
                       $('.postText').val("");
                      }
                   }
               }
               Wo_StartBar();
               window.post = 0;
               var url = $(this).attr('data-ajax');
               e.preventDefault();
               if (!ISAPI) {
                 if (url == '?index.php?link1=home') {
                    $get_value = $('#json-data').val();
                    if ($get_value) {
                        $('#load-more-posts').hide();
                        json_data = JSON.parse($('#json-data').val());
                        if (json_data.page == 'home') {
                          $('#posts').html('<div class="posts_load"><div class="wo_loading_post"><div class="wo_loading_post_child"></div></div></div>');
                            loadposts();
                            window.history.pushState({state:'new'},'', websiteUrl);
                            $("html, body").animate({ scrollTop: 0 }, 100);
                            $('.user-details, .pac-container, .lightbox-container').remove();
                            Wo_clearPRecording();
                            Wo_CleanRecordNodes();
                            Wo_stopRecording();
                            Wo_StopLocalStream();
                            
                            return false;
                        }
                    }
                 }
                 $.post(Wo_Ajax_Requests_Filee() + url, {url:url}, function (data) {
                     $('.user-details').remove();
                     json_data = JSON.parse($(data).filter('#json-data').val());
                     if (json_data.welcome_page == 1 || json_data.redirect == 1) {
                         window.location.href = websiteUrl;
                         return false;
                     }
                     if ($('.message-option-btns').length > 0) {
                          if (json_data.url == 'index.php?index.php?link1=home') {
                              window.location.href = websiteUrl;
                          } else {
                             window.location.href = json_data.url;
                          }
                          return false;
                     }
                     //document.getElementById('#contnet').innerHTML = data;
                     box.html(data);
                     if (json_data.is_css_file == 1) {
                       $('.styled-profile').remove();
                       $('footer').append(json_data.css_file);
                       $('.extra-css').html(json_data.css_file_header);
                     } else {
                       $('.styled-profile').attr('href', '');
                       $('.extra-css').empty();
                     }
                     Wo_clearPRecording();
                     Wo_CleanRecordNodes();
                     Wo_stopRecording();
                     Wo_StopLocalStream();
                     if (json_data.page == 'home') {
                       $('.filterby li.filter-by-li').on('click', function (e) {
                         $('.filterby li.filter-by-li').each(function(){
                           $(this).removeClass('avtive');
                           $(this).find('i').addClass('hidden');
                         });
                          $(this).find('i').removeClass('hidden');
                          $(this).addClass('avtive');
                        });
                       window.history.pushState({state:'new'},'', websiteUrl);
                       //window.history.pushState({}, "<?php echo $wo['config']['site_url']?>", websiteUrl);
                     } else {
                       window.history.pushState({state:'new'},'', json_data.url);
                       //window.history.pushState({}, "<?php echo $wo['config']['site_url']?>", json_data.url);
                     }
                     $('.postText').autogrow({vertical: true, horizontal: false, height: 200});
                      window.onpopstate = function(event) {
                        $(window).unbind('popstate');
                        window.location.href = document.location;
                      };

                     if (json_data.page == 'timeline' || json_data.page == 'page' || json_data.page == 'group') {
                       $('.content-container').css('margin-top', '50px');
                       $('.ad-placement-header-footer').find('.contnet').css('margin-top', '20px');
                     } else {
                       $('.content-container').css('margin-top', '50px');
                       $('.ad-placement-header-footer').find('.contnet').css('margin-top', '0');
                     }
                     if (json_data.is_footer == 1 && $('.second-footer').css('display') == 'none') {
                        $('footer .footer-wrapper').show();
                     } else {
                      if ($(window).width() < 720) {
                        $('footer .footer-wrapper').show();
                      } else {
                        $('footer .footer-wrapper, .second-footer').hide();
                      }
                     }
                     document.title = decodeHtml(json_data.title);
                     document_title = decodeHtml(json_data.title);
                     $("html, body").animate({ scrollTop: 0 }, 150);
                     Wo_FinishBar();
                     $('#hidden-content').empty();
                 });
                 $('.user-details, .pac-container, .lightbox-container').remove();
               }
           });
       });

Answer 1

https://developer.mozilla.org/ru/docs/Web/API/Hist...
https://github.com/defunkt/jquery-pjax