diff --git a/src/webui/www/private/scripts/client.js b/src/webui/www/private/scripts/client.js
index 2cdce3d32..e36042962 100644
--- a/src/webui/www/private/scripts/client.js
+++ b/src/webui/www/private/scripts/client.js
@@ -185,7 +185,7 @@ window.addEventListener("DOMContentLoaded", () => {
 
     window.addEventListener("resize", window.qBittorrent.Misc.createDebounceHandler(500, (e) => {
         // only save sizes if the columns are visible
-        if (!$("mainColumn").hasClass("invisible"))
+        if (!$("mainColumn").classList.contains("invisible"))
             saveColumnSizes();
     }));
 
@@ -1225,7 +1225,7 @@ window.addEventListener("DOMContentLoaded", () => {
         else {
             $("showRssReaderLink").firstElementChild.style.opacity = "0";
             $("rssTabLink").classList.add("invisible");
-            if ($("rssTabLink").hasClass("selected"))
+            if ($("rssTabLink").classList.contains("selected"))
                 $("transfersTabLink").click();
         }
 
@@ -1239,7 +1239,7 @@ window.addEventListener("DOMContentLoaded", () => {
         else {
             $("showSearchEngineLink").firstElementChild.style.opacity = "0";
             $("searchTabLink").classList.add("invisible");
-            if ($("searchTabLink").hasClass("selected"))
+            if ($("searchTabLink").classList.contains("selected"))
                 $("transfersTabLink").click();
         }
 
@@ -1253,7 +1253,7 @@ window.addEventListener("DOMContentLoaded", () => {
         else {
             $("showLogViewerLink").firstElementChild.style.opacity = "0";
             $("logTabLink").classList.add("invisible");
-            if ($("logTabLink").hasClass("selected"))
+            if ($("logTabLink").classList.contains("selected"))
                 $("transfersTabLink").click();
         }
 
diff --git a/src/webui/www/private/scripts/contextmenu.js b/src/webui/www/private/scripts/contextmenu.js
index 9d26f0113..368f048d1 100644
--- a/src/webui/www/private/scripts/contextmenu.js
+++ b/src/webui/www/private/scripts/contextmenu.js
@@ -92,7 +92,7 @@ window.qBittorrent.ContextMenu ??= (() => {
 
             const scrollableMenuMaxHeight = document.documentElement.clientHeight * 0.75;
 
-            if (this.menu.hasClass("scrollableMenu"))
+            if (this.menu.classList.contains("scrollableMenu"))
                 this.menu.style.maxHeight = `${scrollableMenuMaxHeight}px`;
 
             // draw the menu off-screen to know the menu dimensions
@@ -119,7 +119,7 @@ window.qBittorrent.ContextMenu ??= (() => {
             const uls = this.menu.getElementsByTagName("ul");
             for (let i = 0; i < uls.length; ++i) {
                 const ul = uls[i];
-                if (ul.hasClass("scrollableMenu"))
+                if (ul.classList.contains("scrollableMenu"))
                     ul.style.maxHeight = `${scrollableMenuMaxHeight}px`;
                 const rectParent = ul.parentNode.getBoundingClientRect();
                 const xPosOrigin = rectParent.left;
diff --git a/src/webui/www/private/scripts/dynamicTable.js b/src/webui/www/private/scripts/dynamicTable.js
index 5ad299d30..4122ffe44 100644
--- a/src/webui/www/private/scripts/dynamicTable.js
+++ b/src/webui/www/private/scripts/dynamicTable.js
@@ -711,7 +711,7 @@ window.qBittorrent.DynamicTable ??= (() => {
             for (let i = 0; i < trs.length; ++i) {
                 const tr = trs[i];
                 this.selectedRows.push(tr.rowId);
-                if (!tr.hasClass("selected"))
+                if (!tr.classList.contains("selected"))
                     tr.classList.add("selected");
             }
         },
diff --git a/src/webui/www/private/scripts/prop-files.js b/src/webui/www/private/scripts/prop-files.js
index 3db3495e6..3ca24619f 100644
--- a/src/webui/www/private/scripts/prop-files.js
+++ b/src/webui/www/private/scripts/prop-files.js
@@ -335,8 +335,8 @@ window.qBittorrent.PropFiles ??= (() => {
 
     let loadTorrentFilesDataTimer = -1;
     const loadTorrentFilesData = () => {
-        if ($("propFiles").hasClass("invisible")
-            || $("propertiesPanel_collapseToggle").hasClass("panel-expand")) {
+        if ($("propFiles").classList.contains("invisible")
+            || $("propertiesPanel_collapseToggle").classList.contains("panel-expand")) {
             // Tab changed, don't do anything
             return;
         }
diff --git a/src/webui/www/private/scripts/prop-general.js b/src/webui/www/private/scripts/prop-general.js
index c0c407e06..2fe7e32c4 100644
--- a/src/webui/www/private/scripts/prop-general.js
+++ b/src/webui/www/private/scripts/prop-general.js
@@ -76,8 +76,8 @@ window.qBittorrent.PropGeneral ??= (() => {
 
     let loadTorrentDataTimer = -1;
     const loadTorrentData = () => {
-        if ($("propGeneral").hasClass("invisible")
-            || $("propertiesPanel_collapseToggle").hasClass("panel-expand")) {
+        if ($("propGeneral").classList.contains("invisible")
+            || $("propertiesPanel_collapseToggle").classList.contains("panel-expand")) {
             // Tab changed, don't do anything
             return;
         }
diff --git a/src/webui/www/private/scripts/prop-peers.js b/src/webui/www/private/scripts/prop-peers.js
index 40dbca28f..bed2f4908 100644
--- a/src/webui/www/private/scripts/prop-peers.js
+++ b/src/webui/www/private/scripts/prop-peers.js
@@ -43,8 +43,8 @@ window.qBittorrent.PropPeers ??= (() => {
     let show_flags = true;
 
     const loadTorrentPeersData = () => {
-        if ($("propPeers").hasClass("invisible")
-            || $("propertiesPanel_collapseToggle").hasClass("panel-expand")) {
+        if ($("propPeers").classList.contains("invisible")
+            || $("propertiesPanel_collapseToggle").classList.contains("panel-expand")) {
             syncTorrentPeersLastResponseId = 0;
             torrentPeersTable.clear();
             return;
diff --git a/src/webui/www/private/scripts/prop-trackers.js b/src/webui/www/private/scripts/prop-trackers.js
index ab9cec75b..a87c7f830 100644
--- a/src/webui/www/private/scripts/prop-trackers.js
+++ b/src/webui/www/private/scripts/prop-trackers.js
@@ -43,8 +43,8 @@ window.qBittorrent.PropTrackers ??= (() => {
     let loadTrackersDataTimer = -1;
 
     const loadTrackersData = () => {
-        if ($("propTrackers").hasClass("invisible")
-            || $("propertiesPanel_collapseToggle").hasClass("panel-expand")) {
+        if ($("propTrackers").classList.contains("invisible")
+            || $("propertiesPanel_collapseToggle").classList.contains("panel-expand")) {
             // Tab changed, don't do anything
             return;
         }
diff --git a/src/webui/www/private/scripts/prop-webseeds.js b/src/webui/www/private/scripts/prop-webseeds.js
index 8f80e4f88..b538443f2 100644
--- a/src/webui/www/private/scripts/prop-webseeds.js
+++ b/src/webui/www/private/scripts/prop-webseeds.js
@@ -43,8 +43,8 @@ window.qBittorrent.PropWebseeds ??= (() => {
 
     let loadWebSeedsDataTimer = -1;
     const loadWebSeedsData = () => {
-        if ($("propWebSeeds").hasClass("invisible")
-            || $("propertiesPanel_collapseToggle").hasClass("panel-expand")) {
+        if ($("propWebSeeds").classList.contains("invisible")
+            || $("propertiesPanel_collapseToggle").classList.contains("panel-expand")) {
             // Tab changed, don't do anything
             return;
         }
diff --git a/src/webui/www/private/scripts/search.js b/src/webui/www/private/scripts/search.js
index 42466229c..a756a54b7 100644
--- a/src/webui/www/private/scripts/search.js
+++ b/src/webui/www/private/scripts/search.js
@@ -238,7 +238,7 @@ window.qBittorrent.Search ??= (() => {
             return;
 
         const searchId = getSearchIdFromTab(tab);
-        const isTabSelected = tab.hasClass("selected");
+        const isTabSelected = tab.classList.contains("selected");
         const newTabToSelect = isTabSelected ? (tab.nextSibling || tab.previousSibling) : null;
 
         const currentSearchId = getSelectedSearchId();
diff --git a/src/webui/www/private/views/cookies.html b/src/webui/www/private/views/cookies.html
index 5767b39d1..0b6c6fa5d 100644
--- a/src/webui/www/private/views/cookies.html
+++ b/src/webui/www/private/views/cookies.html
@@ -108,7 +108,7 @@
         };
 
         const save = () => {
-            const rows = [...document.querySelectorAll("#manageCookiesTable tbody tr")].filter(e => !e.hasClass("invisible"));
+            const rows = [...document.querySelectorAll("#manageCookiesTable tbody tr")].filter(e => !e.classList.contains("invisible"));
             const cookies = rows.map(row => {
                 const expDateValue = row.querySelector("td.expDate input").valueAsNumber;
                 // remove ms from string
diff --git a/src/webui/www/private/views/log.html b/src/webui/www/private/views/log.html
index 2d5e1a460..1f54315f5 100644
--- a/src/webui/www/private/views/log.html
+++ b/src/webui/www/private/views/log.html
@@ -370,7 +370,7 @@
                 onSuccess: (response) => {
                     $("error_div").textContent = "";
 
-                    if ($("logTabColumn").hasClass("invisible"))
+                    if ($("logTabColumn").classList.contains("invisible"))
                         return;
 
                     if (response.length > 0) {