diff --git a/scripts/pi-hole/js/db_graph.js b/scripts/pi-hole/js/db_graph.js
index 402c680c..66ab5f11 100644
--- a/scripts/pi-hole/js/db_graph.js
+++ b/scripts/pi-hole/js/db_graph.js
@@ -106,10 +106,11 @@ function updateQueriesOverTime() {
       }
 
       for (hour in data.ads_over_time[0]) {
-        if (Object.prototype.hasOwnProperty.call(data.ads_over_time[0], hour)) {
-          if (dates.indexOf(parseInt(data.ads_over_time[0][hour], 10)) === -1) {
-            dates.push(parseInt(data.ads_over_time[0][hour], 10));
-          }
+        if (
+          Object.prototype.hasOwnProperty.call(data.ads_over_time[0], hour) &&
+          dates.indexOf(parseInt(data.ads_over_time[0][hour], 10)) === -1
+        ) {
+          dates.push(parseInt(data.ads_over_time[0][hour], 10));
         }
       }
 
diff --git a/scripts/pi-hole/js/footer.js b/scripts/pi-hole/js/footer.js
index 32dbc84e..7612b8ec 100644
--- a/scripts/pi-hole/js/footer.js
+++ b/scripts/pi-hole/js/footer.js
@@ -44,7 +44,7 @@ function countDown() {
   var ena = $("#enableLabel");
   var enaT = $("#enableTimer");
   var target = new Date(parseInt(enaT.html(), 10));
-  var seconds = Math.round((target.getTime() - new Date().getTime()) / 1000);
+  var seconds = Math.round((target.getTime() - Date.now()) / 1000);
 
   if (seconds > 0) {
     setTimeout(countDown, 1000);
@@ -81,7 +81,7 @@ function piholeChange(action, duration) {
           btnStatus.html("");
           piholeChanged("disabled");
           if (duration > 0) {
-            enaT.html(new Date().getTime() + duration * 1000);
+            enaT.html(Date.now() + duration * 1000);
             setTimeout(countDown, 100);
           }
         }
@@ -206,7 +206,7 @@ function initCPUtemp() {
 $(function () {
   var enaT = $("#enableTimer");
   var target = new Date(parseInt(enaT.html(), 10));
-  var seconds = Math.round((target.getTime() - new Date().getTime()) / 1000);
+  var seconds = Math.round((target.getTime() - Date.now()) / 1000);
   if (seconds > 0) {
     setTimeout(countDown, 100);
   }
diff --git a/scripts/pi-hole/js/index.js b/scripts/pi-hole/js/index.js
index fa154718..f56d6360 100644
--- a/scripts/pi-hole/js/index.js
+++ b/scripts/pi-hole/js/index.js
@@ -49,7 +49,7 @@ var customTooltips = function (tooltip) {
     tooltipEl.style.fontStyle = tooltip._bodyFontStyle;
     // append Tooltip next to canvas-containing box
     tooltipEl.ancestor = this._chart.canvas.closest(".box[id]").parentNode;
-    tooltipEl.ancestor.appendChild(tooltipEl);
+    tooltipEl.ancestor.append(tooltipEl);
   }
 
   // Hide if no tooltip
diff --git a/scripts/pi-hole/js/network.js b/scripts/pi-hole/js/network.js
index dccc8d0b..fbe915f0 100644
--- a/scripts/pi-hole/js/network.js
+++ b/scripts/pi-hole/js/network.js
@@ -31,12 +31,6 @@ function handleAjaxError(xhr, textStatus) {
 }
 
 function getTimestamp() {
-  if (!Date.now) {
-    Date.now = function () {
-      return new Date().getTime();
-    };
-  }
-
   return Math.floor(Date.now() / 1000);
 }