diff --git a/.eslintrc.yaml b/.eslintrc.yaml
index eeb3e20cb..ea14d27d4 100644
--- a/.eslintrc.yaml
+++ b/.eslintrc.yaml
@@ -303,7 +303,7 @@ rules:
   jquery/no-in-array: [2]
   jquery/no-is-array: [2]
   jquery/no-is-function: [2]
-  jquery/no-is: [0]
+  jquery/no-is: [2]
   jquery/no-load: [2]
   jquery/no-map: [2]
   jquery/no-merge: [2]
@@ -440,7 +440,7 @@ rules:
   no-jquery/no-is-numeric: [2]
   no-jquery/no-is-plain-object: [2]
   no-jquery/no-is-window: [2]
-  no-jquery/no-is: [0]
+  no-jquery/no-is: [2]
   no-jquery/no-jquery-constructor: [0]
   no-jquery/no-live: [2]
   no-jquery/no-load-shorthand: [2]
diff --git a/web_src/js/features/admin/common.js b/web_src/js/features/admin/common.js
index 0c65f04ab..3c485d67a 100644
--- a/web_src/js/features/admin/common.js
+++ b/web_src/js/features/admin/common.js
@@ -84,7 +84,7 @@ export function initAdminCommon() {
     hideElem($('.oauth2_use_custom_url_field'));
     $('.oauth2_use_custom_url_field input[required]').removeAttr('required');
 
-    if ($('#oauth2_use_custom_url').is(':checked')) {
+    if (document.getElementById('oauth2_use_custom_url')?.checked) {
       for (const custom of ['token_url', 'auth_url', 'profile_url', 'email_url', 'tenant']) {
         if (applyDefaultValues) {
           $(`#oauth2_${custom}`).val($(`#${provider}_${custom}`).val());
@@ -98,7 +98,7 @@ export function initAdminCommon() {
   }
 
   function onEnableLdapGroupsChange() {
-    toggleElem($('#ldap-group-options'), $('.js-ldap-group-toggle').is(':checked'));
+    toggleElem($('#ldap-group-options'), $('.js-ldap-group-toggle')[0].checked);
   }
 
   // New authentication
diff --git a/web_src/js/features/common-global.js b/web_src/js/features/common-global.js
index e27935a86..e2ce01eb4 100644
--- a/web_src/js/features/common-global.js
+++ b/web_src/js/features/common-global.js
@@ -373,7 +373,7 @@ function initGlobalShowModal() {
 
       if (attrTargetAttr) {
         $attrTarget[0][attrTargetAttr] = attrib.value;
-      } else if ($attrTarget.is('input') || $attrTarget.is('textarea')) {
+      } else if ($attrTarget[0].matches('input, textarea')) {
         $attrTarget.val(attrib.value); // FIXME: add more supports like checkbox
       } else {
         $attrTarget.text(attrib.value); // FIXME: it should be more strict here, only handle div/span/p
diff --git a/web_src/js/features/repo-legacy.js b/web_src/js/features/repo-legacy.js
index 43567f439..838540fcc 100644
--- a/web_src/js/features/repo-legacy.js
+++ b/web_src/js/features/repo-legacy.js
@@ -139,7 +139,7 @@ export function initRepoCommentForm() {
 
       hasUpdateAction = $listMenu.data('action') === 'update'; // Update the var
 
-      const $clickedItem = $(this);
+      const clickedItem = this; // eslint-disable-line unicorn/no-this-assignment
       const scope = $(this).attr('data-scope');
 
       $(this).parent().find('.item').each(function () {
@@ -148,10 +148,10 @@ export function initRepoCommentForm() {
           if ($(this).attr('data-scope') !== scope) {
             return true;
           }
-          if (!$(this).is($clickedItem) && !$(this).hasClass('checked')) {
+          if (this !== clickedItem && !$(this).hasClass('checked')) {
             return true;
           }
-        } else if (!$(this).is($clickedItem)) {
+        } else if (this !== clickedItem) {
           // Toggle for other labels
           return true;
         }
diff --git a/web_src/js/modules/fomantic/dropdown.js b/web_src/js/modules/fomantic/dropdown.js
index 7302078db..97aabb44b 100644
--- a/web_src/js/modules/fomantic/dropdown.js
+++ b/web_src/js/modules/fomantic/dropdown.js
@@ -199,7 +199,7 @@ function attachDomEvents($dropdown, $focusable, $menu) {
       if (!$item) $item = $menu.find('> .item.selected'); // when dropdown filters items by input, there is no "value", so query the "selected" item
       // if the selected item is clickable, then trigger the click event.
       // we can not click any item without check, because Fomantic code might also handle the Enter event. that would result in double click.
-      if ($item && ($item.is('a') || $item.hasClass('js-aria-clickable'))) $item[0].click();
+      if ($item && ($item[0].matches('a') || $item.hasClass('js-aria-clickable'))) $item[0].click();
     }
   });