diff --git a/django/contrib/admin/helpers.py b/django/contrib/admin/helpers.py
index 5e8e0caf697..d0350c3930a 100644
--- a/django/contrib/admin/helpers.py
+++ b/django/contrib/admin/helpers.py
@@ -81,12 +81,7 @@ class Fieldset:
     def media(self):
         if 'collapse' in self.classes:
             extra = '' if settings.DEBUG else '.min'
-            js = [
-                'vendor/jquery/jquery%s.js' % extra,
-                'jquery.init.js',
-                'collapse%s.js' % extra,
-            ]
-            return forms.Media(js=['admin/js/%s' % url for url in js])
+            return forms.Media(js=['admin/js/collapse%s.js' % extra])
         return forms.Media()
 
     def __iter__(self):
diff --git a/django/contrib/admin/static/admin/js/SelectFilter2.js b/django/contrib/admin/static/admin/js/SelectFilter2.js
index b6bcda0c3cf..4221778bb2b 100644
--- a/django/contrib/admin/static/admin/js/SelectFilter2.js
+++ b/django/contrib/admin/static/admin/js/SelectFilter2.js
@@ -166,13 +166,7 @@ Requires jQuery, core.js, and SelectBox.js.
                 // In horizontal mode, give the same height to the two boxes.
                 var j_from_box = $('#' + field_id + '_from');
                 var j_to_box = $('#' + field_id + '_to');
-                var resize_filters = function() { j_to_box.height($(filter_p).outerHeight() + j_from_box.outerHeight()); };
-                if (j_from_box.outerHeight() > 0) {
-                    resize_filters(); // This fieldset is already open. Resize now.
-                } else {
-                    // This fieldset is probably collapsed. Wait for its 'show' event.
-                    j_to_box.closest('fieldset').one('show.fieldset', resize_filters);
-                }
+                j_to_box.height($(filter_p).outerHeight() + j_from_box.outerHeight());
             }
 
             // Initial icon refresh
diff --git a/django/contrib/admin/static/admin/js/admin/DateTimeShortcuts.js b/django/contrib/admin/static/admin/js/admin/DateTimeShortcuts.js
index b7ca95bd674..8b7de5eed72 100644
--- a/django/contrib/admin/static/admin/js/admin/DateTimeShortcuts.js
+++ b/django/contrib/admin/static/admin/js/admin/DateTimeShortcuts.js
@@ -63,7 +63,6 @@
         },
         // Add a warning when the time zone in the browser and backend do not match.
         addTimezoneWarning: function(inp) {
-            var $ = django.jQuery;
             var warningClass = DateTimeShortcuts.timezoneWarningClass;
             var timezoneOffset = DateTimeShortcuts.timezoneOffset / 3600;
 
@@ -73,7 +72,7 @@
             }
 
             // Check if warning is already there.
-            if ($(inp).siblings('.' + warningClass).length) {
+            if (inp.parentNode.querySelectorAll('.' + warningClass).length) {
                 return;
             }
 
@@ -95,13 +94,11 @@
             }
             message = interpolate(message, [timezoneOffset]);
 
-            var $warning = $('<span>');
-            $warning.attr('class', warningClass);
-            $warning.text(message);
-
-            $(inp).parent()
-                .append($('<br>'))
-                .append($warning);
+            var warning = document.createElement('span');
+            warning.className = warningClass;
+            warning.textContent = message;
+            inp.parentNode.appendChild(document.createElement('br'));
+            inp.parentNode.appendChild(warning);
         },
         // Add clock widget to a given field
         addClock: function(inp) {
@@ -115,7 +112,7 @@
             inp.parentNode.insertBefore(shortcuts_span, inp.nextSibling);
             var now_link = document.createElement('a');
             now_link.setAttribute('href', "#");
-            now_link.appendChild(document.createTextNode(gettext('Now')));
+            now_link.textContent = gettext('Now');
             now_link.addEventListener('click', function(e) {
                 e.preventDefault();
                 DateTimeShortcuts.handleClockQuicklink(num, -1);
@@ -345,7 +342,7 @@
                 e.preventDefault();
                 DateTimeShortcuts.dismissCalendar(num);
             });
-            django.jQuery(document).on('keyup', function(event) {
+            document.addEventListener('keyup', function(event) {
                 if (event.which === 27) {
                     // ESC key closes popup
                     DateTimeShortcuts.dismissCalendar(num);
diff --git a/django/contrib/admin/static/admin/js/collapse.js b/django/contrib/admin/static/admin/js/collapse.js
index 4b296896d4f..3123878e10b 100644
--- a/django/contrib/admin/static/admin/js/collapse.js
+++ b/django/contrib/admin/static/admin/js/collapse.js
@@ -1,26 +1,52 @@
 /*global gettext*/
-(function($) {
+(function() {
     'use strict';
-    $(document).ready(function() {
+    var closestElem = function(elem, tagName) {
+        if (elem.nodeName === tagName.toUpperCase()) {
+            return elem;
+        }
+        if (elem.parentNode.nodeName === 'BODY') {
+            return null;
+        }
+        return elem.parentNode && closestElem(elem.parentNode, tagName);
+    };
+
+    window.addEventListener('load', function() {
         // Add anchor tag for Show/Hide link
-        $("fieldset.collapse").each(function(i, elem) {
+        var fieldsets = document.querySelectorAll('fieldset.collapse');
+        for (var i = 0; i < fieldsets.length; i++) {
+            var elem = fieldsets[i];
             // Don't hide if fields in this fieldset have errors
-            if ($(elem).find("div.errors").length === 0) {
-                $(elem).addClass("collapsed").find("h2").first().append(' (<a id="fieldsetcollapser' +
-                    i + '" class="collapse-toggle" href="#">' + gettext("Show") +
-                    '</a>)');
+            if (elem.querySelectorAll('div.errors').length === 0) {
+                elem.classList.add('collapsed');
+                var h2 = elem.querySelector('h2');
+                var link = document.createElement('a');
+                link.setAttribute('id', 'fieldsetcollapser' + i);
+                link.setAttribute('class', 'collapse-toggle');
+                link.setAttribute('href', '#');
+                link.textContent = gettext('Show');
+                h2.appendChild(document.createTextNode(' ('));
+                h2.appendChild(link);
+                h2.appendChild(document.createTextNode(')'));
             }
-        });
+        }
         // Add toggle to anchor tag
-        $("fieldset.collapse a.collapse-toggle").on('click', function(ev) {
-            if ($(this).closest("fieldset").hasClass("collapsed")) {
+        var toggles = document.querySelectorAll('fieldset.collapse a.collapse-toggle');
+        var toggleFunc = function(ev) {
+            ev.preventDefault();
+            var fieldset = closestElem(this, 'fieldset');
+            if (fieldset.classList.contains('collapsed')) {
                 // Show
-                $(this).text(gettext("Hide")).closest("fieldset").removeClass("collapsed").trigger("show.fieldset", [$(this).attr("id")]);
+                this.textContent = gettext('Hide');
+                fieldset.classList.remove('collapsed');
             } else {
                 // Hide
-                $(this).text(gettext("Show")).closest("fieldset").addClass("collapsed").trigger("hide.fieldset", [$(this).attr("id")]);
+                this.textContent = gettext('Show');
+                fieldset.classList.add('collapsed');
             }
-            return false;
-        });
+        };
+        for (i = 0; i < toggles.length; i++) {
+            toggles[i].addEventListener('click', toggleFunc);
+        }
     });
-})(django.jQuery);
+})();
diff --git a/django/contrib/admin/widgets.py b/django/contrib/admin/widgets.py
index 4ce3e053f6c..5bf54da7d6a 100644
--- a/django/contrib/admin/widgets.py
+++ b/django/contrib/admin/widgets.py
@@ -51,16 +51,11 @@ class FilteredSelectMultiple(forms.SelectMultiple):
 
 
 class AdminDateWidget(forms.DateInput):
-    @property
-    def media(self):
-        extra = '' if settings.DEBUG else '.min'
+    class Media:
         js = [
-            'vendor/jquery/jquery%s.js' % extra,
-            'jquery.init.js',
-            'calendar.js',
-            'admin/DateTimeShortcuts.js',
+            'admin/js/calendar.js',
+            'admin/js/admin/DateTimeShortcuts.js',
         ]
-        return forms.Media(js=["admin/js/%s" % path for path in js])
 
     def __init__(self, attrs=None, format=None):
         attrs = {'class': 'vDateField', 'size': '10', **(attrs or {})}
@@ -68,16 +63,11 @@ class AdminDateWidget(forms.DateInput):
 
 
 class AdminTimeWidget(forms.TimeInput):
-    @property
-    def media(self):
-        extra = '' if settings.DEBUG else '.min'
+    class Media:
         js = [
-            'vendor/jquery/jquery%s.js' % extra,
-            'jquery.init.js',
-            'calendar.js',
-            'admin/DateTimeShortcuts.js',
+            'admin/js/calendar.js',
+            'admin/js/admin/DateTimeShortcuts.js',
         ]
-        return forms.Media(js=["admin/js/%s" % path for path in js])
 
     def __init__(self, attrs=None, format=None):
         attrs = {'class': 'vTimeField', 'size': '8', **(attrs or {})}