diff --git a/assets/js/community.js b/assets/js/community.js
index 5bc1ee2e5..eebaf5d8b 100644
--- a/assets/js/community.js
+++ b/assets/js/community.js
@@ -64,8 +64,8 @@ function get_youtube_replies(target, load_more) {
     xhr.open('GET', url, true);
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status == 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status === 200) {
                 if (load_more) {
                     body = body.parentNode.parentNode;
                     body.removeChild(body.lastElementChild);
diff --git a/assets/js/embed.js b/assets/js/embed.js
index 11d940600..d3c530cb0 100644
--- a/assets/js/embed.js
+++ b/assets/js/embed.js
@@ -2,7 +2,7 @@
 var video_data = JSON.parse(document.getElementById('video_data').innerHTML);
 
 function get_playlist(plid, retries) {
-    if (retries == undefined) retries = 5;
+    if (retries === undefined) retries = 5;
 
     if (retries <= 0) {
         console.log('Failed to pull playlist');
diff --git a/assets/js/handlers.js b/assets/js/handlers.js
index 84e1d7c29..1bf11364e 100644
--- a/assets/js/handlers.js
+++ b/assets/js/handlers.js
@@ -102,8 +102,8 @@
         xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 
         xhr.onreadystatechange = function () {
-            if (xhr.readyState == 4) {
-                if (xhr.status != 200) {
+            if (xhr.readyState === 4) {
+                if (xhr.status !== 200) {
                     count.innerText = parseInt(count.innerText) + 1;
                     row.style.display = '';
                 }
@@ -131,8 +131,8 @@
         xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 
         xhr.onreadystatechange = function () {
-            if (xhr.readyState == 4) {
-                if (xhr.status != 200) {
+            if (xhr.readyState === 4) {
+                if (xhr.status !== 200) {
                     count.innerText = parseInt(count.innerText) + 1;
                     row.style.display = '';
                 }
@@ -159,7 +159,7 @@
         }
 
         // Focus search bar on '/'
-        if (event.key == "/") {
+        if (event.key === "/") {
             document.getElementById('searchbox').focus();
             event.preventDefault();
         }
diff --git a/assets/js/notifications.js b/assets/js/notifications.js
index 9c77895b8..1235fb41e 100644
--- a/assets/js/notifications.js
+++ b/assets/js/notifications.js
@@ -4,7 +4,7 @@ var notification_data = JSON.parse(document.getElementById('notification_data').
 var notifications, delivered;
 
 function get_subscriptions(callback, retries) {
-    if (retries == undefined) retries = 5;
+    if (retries === undefined) retries = 5;
 
     if (retries <= 0) {
         return;
diff --git a/assets/js/player.js b/assets/js/player.js
index a0cef29e7..9903e6149 100644
--- a/assets/js/player.js
+++ b/assets/js/player.js
@@ -225,7 +225,7 @@ player.playbackRate(video_data.params.speed);
 function getCookieValue(name) {
     var value = document.cookie.split(";").filter(item => item.includes(name + "="));
 
-    return (value != null && value.length >= 1)
+    return (value.length >= 1)
         ? value[0].substring((name + "=").length, value[0].length)
         : null;
 }
@@ -237,13 +237,13 @@ function getCookieValue(name) {
  * @param {number} newSpeed New speed defined (null if unchanged)
  */
 function updateCookie(newVolume, newSpeed) {
-    var volumeValue = newVolume != null ? newVolume : video_data.params.volume;
-    var speedValue = newSpeed != null ? newSpeed : video_data.params.speed;
+    var volumeValue = newVolume !== null ? newVolume : video_data.params.volume;
+    var speedValue = newSpeed !== null ? newSpeed : video_data.params.speed;
 
     var cookieValue = getCookieValue('PREFS');
     var cookieData;
 
-    if (cookieValue != null) {
+    if (cookieValue !== null) {
         var cookieJson = JSON.parse(decodeURIComponent(cookieValue));
         cookieJson.volume = volumeValue;
         cookieJson.speed = speedValue;
@@ -260,7 +260,7 @@ function updateCookie(newVolume, newSpeed) {
     var domainUsed = window.location.hostname;
 
     // Fix for a bug in FF where the leading dot in the FQDN is not ignored
-    if (domainUsed.charAt(0) != '.' && !ipRegex.test(domainUsed) && domainUsed != 'localhost')
+    if (domainUsed.charAt(0) !== '.' && !ipRegex.test(domainUsed) && domainUsed !== 'localhost')
         domainUsed = '.' + window.location.hostname;
 
     document.cookie = 'PREFS=' + cookieData + '; SameSite=Strict; path=/; domain=' +
@@ -334,7 +334,7 @@ if (video_data.params.autoplay) {
 if (!video_data.params.listen && video_data.params.quality === 'dash') {
     player.httpSourceSelector();
 
-    if (video_data.params.quality_dash != "auto") {
+    if (video_data.params.quality_dash !== "auto") {
         player.ready(() => {
             player.on("loadedmetadata", () => {
                 const qualityLevels = Array.from(player.qualityLevels()).sort((a, b) => a.height - b.height);
@@ -357,7 +357,7 @@ if (!video_data.params.listen && video_data.params.quality === 'dash') {
                         }
                 }
                 for (let i = 0; i < qualityLevels.length; i++) {
-                    qualityLevels[i].enabled = (i == targetQualityLevel);
+                    qualityLevels[i].enabled = (i === targetQualityLevel);
                 }
             });
         });
@@ -703,7 +703,7 @@ window.addEventListener('keydown', e => {
 
     var volumeHover = false;
     var volumeSelector = pEl.querySelector('.vjs-volume-menu-button') || pEl.querySelector('.vjs-volume-panel');
-    if (volumeSelector != null) {
+    if (volumeSelector !== null) {
         volumeSelector.onmouseover = function () { volumeHover = true; };
         volumeSelector.onmouseout = function () { volumeHover = false; };
     }
@@ -723,9 +723,9 @@ window.addEventListener('keydown', e => {
                     var delta = Math.max(-1, Math.min(1, (event.wheelDelta || -event.detail)));
                     event.preventDefault();
 
-                    if (delta == 1) {
+                    if (delta === 1) {
                         increase_volume(volumeStep);
-                    } else if (delta == -1) {
+                    } else if (delta === -1) {
                         increase_volume(-volumeStep);
                     }
                 }
@@ -750,7 +750,7 @@ if (player_data.preferred_caption_found) {
 }
 
 // Safari audio double duration fix
-if (navigator.vendor == "Apple Computer, Inc." && video_data.params.listen) {
+if (navigator.vendor === "Apple Computer, Inc." && video_data.params.listen) {
     player.on('loadedmetadata', function () {
         player.on('timeupdate', function () {
             if (player.remainingTime() < player.duration() / 2 && player.remainingTime() >= 2) {
diff --git a/assets/js/playlist_widget.js b/assets/js/playlist_widget.js
index 0cf721a11..c7f4805f4 100644
--- a/assets/js/playlist_widget.js
+++ b/assets/js/playlist_widget.js
@@ -15,8 +15,8 @@ function add_playlist_video(target) {
     xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status == 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status === 200) {
                 option.innerText = '✓' + option.innerText;
             }
         }
@@ -39,8 +39,8 @@ function add_playlist_item(target) {
     xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status != 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status !== 200) {
                 tile.style.display = '';
             }
         }
@@ -63,8 +63,8 @@ function remove_playlist_item(target) {
     xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status != 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status !== 200) {
                 tile.style.display = '';
             }
         }
diff --git a/assets/js/subscribe_widget.js b/assets/js/subscribe_widget.js
index bdd5d5812..d44d65da6 100644
--- a/assets/js/subscribe_widget.js
+++ b/assets/js/subscribe_widget.js
@@ -29,8 +29,8 @@ function subscribe(retries = 5) {
     subscribe_button.innerHTML = '<b>' + subscribe_data.unsubscribe_text + ' | ' + subscribe_data.sub_count_text + '</b>';
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status != 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status !== 200) {
                 subscribe_button.onclick = subscribe;
                 subscribe_button.innerHTML = fallback;
             }
@@ -69,8 +69,8 @@ function unsubscribe(retries = 5) {
     subscribe_button.innerHTML = '<b>' + subscribe_data.subscribe_text + ' | ' + subscribe_data.sub_count_text + '</b>';
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status != 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status !== 200) {
                 subscribe_button.onclick = unsubscribe;
                 subscribe_button.innerHTML = fallback;
             }
diff --git a/assets/js/watch.js b/assets/js/watch.js
index 578d4ac0b..ebc779057 100644
--- a/assets/js/watch.js
+++ b/assets/js/watch.js
@@ -117,7 +117,7 @@ function number_with_separator(val) {
 }
 
 function get_playlist(plid, retries) {
-    if (retries == undefined) retries = 5;
+    if (retries === undefined) retries = 5;
     playlist = document.getElementById('playlist');
 
     if (retries <= 0) {
@@ -147,8 +147,8 @@ function get_playlist(plid, retries) {
     xhr.open('GET', plid_url, true);
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status == 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status === 200) {
                 playlist.innerHTML = xhr.response.playlistHtml;
                 var nextVideo = document.getElementById(xhr.response.nextVideo);
                 nextVideo.parentNode.parentNode.scrollTop = nextVideo.offsetTop;
@@ -210,7 +210,7 @@ function get_playlist(plid, retries) {
 }
 
 function get_reddit_comments(retries) {
-    if (retries == undefined) retries = 5;
+    if (retries === undefined) retries = 5;
     comments = document.getElementById('comments');
 
     if (retries <= 0) {
@@ -232,8 +232,8 @@ function get_reddit_comments(retries) {
     xhr.open('GET', url, true);
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status == 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status === 200) {
                 comments.innerHTML = ' \
                 <div> \
                     <h3> \
@@ -287,7 +287,7 @@ function get_reddit_comments(retries) {
 }
 
 function get_youtube_comments(retries) {
-    if (retries == undefined) retries = 5;
+    if (retries === undefined) retries = 5;
     comments = document.getElementById('comments');
 
     if (retries <= 0) {
@@ -310,8 +310,8 @@ function get_youtube_comments(retries) {
     xhr.open('GET', url, true);
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status == 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status === 200) {
                 comments.innerHTML = ' \
                 <div> \
                     <h3> \
@@ -384,8 +384,8 @@ function get_youtube_replies(target, load_more, load_replies) {
     xhr.open('GET', url, true);
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status == 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status === 200) {
                 if (load_more) {
                     body = body.parentNode.parentNode;
                     body.removeChild(body.lastElementChild);
diff --git a/assets/js/watched_widget.js b/assets/js/watched_widget.js
index 22afb0542..bd037c2be 100644
--- a/assets/js/watched_widget.js
+++ b/assets/js/watched_widget.js
@@ -14,8 +14,8 @@ function mark_watched(target) {
     xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status != 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status !== 200) {
                 tile.style.display = '';
             }
         }
@@ -39,8 +39,8 @@ function mark_unwatched(target) {
     xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 
     xhr.onreadystatechange = function () {
-        if (xhr.readyState == 4) {
-            if (xhr.status != 200) {
+        if (xhr.readyState === 4) {
+            if (xhr.status !== 200) {
                 count.innerText = count.innerText - 1 + 2;
                 tile.style.display = '';
             }