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| (function () {
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| var sidebarId = 'mw-navigation';
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|
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| function saveSidebarScrollPosition() {
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| var scrollPosition = document.getElementById(sidebarId).scrollTop;
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| var currentPage = window.location.href;
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| sessionStorage.setItem(currentPage, scrollPosition);
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| }
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|
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| function restoreSidebarScrollPosition() {
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| var currentPage = window.location.href;
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| var scrollPosition = sessionStorage.getItem(currentPage);
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| if (scrollPosition !== null) {
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| var sidebar = document.getElementById(sidebarId);
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| sidebar.scrollTop = parseInt(scrollPosition);
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| }
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| }
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|
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| // Save scroll position when the page is hidden (user navigates away)
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| document.addEventListener('visibilitychange', function () {
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| if (document.visibilityState === 'hidden') {
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| saveSidebarScrollPosition();
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| }
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| });
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|
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| // Restore scroll position when the page is visible (user comes back)
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| document.addEventListener('visibilitychange', function () {
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| if (document.visibilityState === 'visible') {
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| restoreSidebarScrollPosition();
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| }
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| });
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|
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| // Save scroll position when the sidebar is scrolled
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| var sidebar = document.getElementById(sidebarId);
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| sidebar.addEventListener('scroll', saveSidebarScrollPosition);
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|
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| // Restore scroll position when the page is loaded
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| window.addEventListener('load', restoreSidebarScrollPosition);
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| })();
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