diff --git a/.eslintignore b/.eslintignore
index f177ae88ff..eea84f4843 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -13,5 +13,4 @@ wagtail/search/static
 wagtail/snippets/static
 wagtail/users/static
 wagtail/contrib/*/static
-wagtail/contrib/search_promotions/templates/wagtailsearchpromotions/includes/searchpromotions_formset.js
 .mypy_cache
diff --git a/.eslintrc.js b/.eslintrc.js
index e8a99ea68a..07ddcba1a3 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -136,6 +136,7 @@ module.exports = {
       files: [
         'docs/_static/**',
         'wagtail/contrib/modeladmin/static_src/wagtailmodeladmin/js/prepopulate.js',
+        'wagtail/contrib/search_promotions/templates/wagtailsearchpromotions/includes/searchpromotions_formset.js',
         'wagtail/contrib/settings/static_src/wagtailsettings/js/site-switcher.js',
         'wagtail/documents/static_src/wagtaildocs/js/add-multiple.js',
         'wagtail/embeds/static_src/wagtailembeds/js/embed-chooser-modal.js',
diff --git a/.prettierignore b/.prettierignore
index a3ad2ef8fc..97ded0d057 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -11,5 +11,4 @@ _build
 *.md
 # Files which contain incompatible syntax.
 *.html
-wagtail/contrib/search_promotions/templates/wagtailsearchpromotions/includes/searchpromotions_formset.js
 .mypy_cache
diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 7be64d333a..581d8d0e40 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -15,6 +15,7 @@ Changelog
  * Run Python tests with coverage and upload coverage data to codecov (Sage Abdullah)
  * Clean up duplicate JavaScript for the `escapeHtml` function (Jordan Rob)
  * Add documentation for `register_user_listing_buttons` hook (LB (Ben Johnston))
+ * Clean up Prettier & Eslint usage for search promotions formset JS file (LB (Ben Johnston))
  * Fix: Make sure workflow timeline icons are visible in high-contrast mode (Loveth Omokaro)
  * Fix: Ensure authentication forms (login, password reset) have a visible border in Windows high-contrast mode (Loveth Omokaro)
  * Fix: Ensure visual consistency between buttons and links as buttons in Windows high-contrast mode (Albina Starykova)
diff --git a/wagtail/contrib/search_promotions/templates/wagtailsearchpromotions/includes/searchpromotions_formset.js b/wagtail/contrib/search_promotions/templates/wagtailsearchpromotions/includes/searchpromotions_formset.js
index 3bf447c1f7..a16c14a609 100644
--- a/wagtail/contrib/search_promotions/templates/wagtailsearchpromotions/includes/searchpromotions_formset.js
+++ b/wagtail/contrib/search_promotions/templates/wagtailsearchpromotions/includes/searchpromotions_formset.js
@@ -1,13 +1,15 @@
-$(function() {
-    var panel = InlinePanel({
-        formsetPrefix: "id_{{ formset.prefix }}",
-        emptyChildFormPrefix: "{{ formset.empty_form.prefix }}",
-        canOrder: true
-    });
+$(function () {
+  // eslint-disable-next-line no-undef
+  var panel = InlinePanel({
+    formsetPrefix: 'id_{{ formset.prefix }}',
+    emptyChildFormPrefix: '{{ formset.empty_form.prefix }}',
+    canOrder: true,
+  });
 
-    {% for form in formset.forms %}
-        panel.initChildControls('{{ formset.prefix }}-{{ forloop.counter0 }}');
-    {% endfor %}
+  // {# Ensure eslint/prettier ignore the Django template syntax by treating them as comments, template for loop will still be executed by Django #}
+  // {% for form in formset.forms %}
+  panel.initChildControls('{{ formset.prefix }}-{{ forloop.counter0 }}');
+  // {% endfor %}
 
-    panel.updateMoveButtonDisabledStates();
+  panel.updateMoveButtonDisabledStates();
 });