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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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| sessionStorage.setItem('sidebarScrollPosition', scrollPosition);
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| }
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|
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| function restoreSidebarScrollPosition() {
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| var scrollPosition = sessionStorage.getItem('sidebarScrollPosition');
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| if (scrollPosition !== null) {
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| document.getElementById(sidebarId).scrollTop = parseInt(scrollPosition);
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| }
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| }
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|
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| // Enable manual scroll restoration
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| if ('scrollRestoration' in history) {
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| history.scrollRestoration = 'manual';
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| }
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|
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| // Save scroll position before unloading the page
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| window.addEventListener('beforeunload', 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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| // Save scroll position when clicking on sidebar links or headings
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| var sidebarLinks = document.querySelectorAll('#' + sidebarId + ' a');
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| sidebarLinks.forEach(function (link) {
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| link.addEventListener('click', saveSidebarScrollPosition);
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| });
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|
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| var sidebarHeadings = document.querySelectorAll('#' + sidebarId + ' .sidebar-heading');
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| sidebarHeadings.forEach(function (heading) {
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| heading.addEventListener('click', saveSidebarScrollPosition);
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| });
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| })();
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