diff --git a/src/components/Compare/SidebarStates.vue b/src/components/Compare/SidebarStates.vue
index 13f0f23..a5187bb 100644
--- a/src/components/Compare/SidebarStates.vue
+++ b/src/components/Compare/SidebarStates.vue
@@ -341,7 +341,7 @@ const secondaryStatData = ref(null);
  */
 const getPercentLabel = (val) => {
   if (Number((val * 100).toFixed(1)) >= 100) return 100;
-  else return parseFloat((val * 100).toFixed(1));
+  else return Number.parseFloat((val * 100).toFixed(1));
 };
 
 /**
diff --git a/src/components/Discover/Conformance/ConformanceResults.vue b/src/components/Discover/Conformance/ConformanceResults.vue
index 25f0c0f..b213184 100644
--- a/src/components/Discover/Conformance/ConformanceResults.vue
+++ b/src/components/Discover/Conformance/ConformanceResults.vue
@@ -505,7 +505,7 @@ const progressWidth = (value) => {
  */
 const getPercentLabel = (val) => {
   if (Number((val * 100).toFixed(1)) >= 100) return 100;
-  else return parseFloat((val * 100).toFixed(1));
+  else return Number.parseFloat((val * 100).toFixed(1));
 };
 
 /**
diff --git a/src/components/Discover/Conformance/MoreModal.vue b/src/components/Discover/Conformance/MoreModal.vue
index 85ae803..56f7d8a 100644
--- a/src/components/Discover/Conformance/MoreModal.vue
+++ b/src/components/Discover/Conformance/MoreModal.vue
@@ -277,7 +277,7 @@ watch(infinite404, (newValue) => {
  */
 function getPercentLabel(val) {
   if (Number((val * 100).toFixed(1)) >= 100) return 100;
-  else return parseFloat((val * 100).toFixed(1));
+  else return Number.parseFloat((val * 100).toFixed(1));
 }
 /**
  * set progress bar width
diff --git a/src/components/Discover/Map/Filter/AttributesFilter.vue b/src/components/Discover/Map/Filter/AttributesFilter.vue
index d4f4a4f..2a3aae6 100644
--- a/src/components/Discover/Map/Filter/AttributesFilter.vue
+++ b/src/components/Discover/Map/Filter/AttributesFilter.vue
@@ -936,7 +936,7 @@ function sliderValueRange(e, direction) {
     }
   }
   // Recalculate the chart mask
-  if (!isNaN(closestIndexes[0]) && !isNaN(closestIndexes[1]))
+  if (!Number.isNaN(closestIndexes[0]) && !Number.isNaN(closestIndexes[1]))
     resizeMask(chartComplete.value);
   else return;
 }
diff --git a/src/components/Discover/Map/Filter/TimeframesFilter.vue b/src/components/Discover/Map/Filter/TimeframesFilter.vue
index 5d921ca..399bc5c 100644
--- a/src/components/Discover/Map/Filter/TimeframesFilter.vue
+++ b/src/components/Discover/Map/Filter/TimeframesFilter.vue
@@ -391,7 +391,7 @@ function sliderTimeRange(e, direction) {
   if (direction === "start") endMinDate.value = e;
   else if (direction === "end") startMaxDate.value = e;
   // Recalculate the chart mask
-  if (!isNaN(closestIndexes[0]) && !isNaN(closestIndexes[1]))
+  if (!Number.isNaN(closestIndexes[0]) && !Number.isNaN(closestIndexes[1]))
     resizeMask(chart.value);
   else return;
 }
diff --git a/src/components/Discover/Map/Filter/TraceFilter.vue b/src/components/Discover/Map/Filter/TraceFilter.vue
index 6c0c10b..9594730 100644
--- a/src/components/Discover/Map/Filter/TraceFilter.vue
+++ b/src/components/Discover/Map/Filter/TraceFilter.vue
@@ -334,7 +334,7 @@ function barOptions() {
  */
 function getPercentLabel(val) {
   if (Number((val * 100).toFixed(1)) >= 100) return 100;
-  else return parseFloat((val * 100).toFixed(1));
+  else return Number.parseFloat((val * 100).toFixed(1));
 }
 
 /**
diff --git a/src/components/Discover/StatusBar.vue b/src/components/Discover/StatusBar.vue
index a4065a0..2638069 100644
--- a/src/components/Discover/StatusBar.vue
+++ b/src/components/Discover/StatusBar.vue
@@ -179,7 +179,7 @@ const statData = ref(null);
  */
 function getPercentLabel(val) {
   if (Number((val * 100).toFixed(1)) >= 100) return 100;
-  else return parseFloat((val * 100).toFixed(1));
+  else return Number.parseFloat((val * 100).toFixed(1));
 }
 
 /** Transforms raw stats into display-ready format with localized numbers and time labels. */
diff --git a/src/components/DurationInput.vue b/src/components/DurationInput.vue
index 51b0481..5c729df 100644
--- a/src/components/DurationInput.vue
+++ b/src/components/DurationInput.vue
@@ -196,16 +196,16 @@ function onFocus(event) {
  */
 function onChange(event) {
   let decoratedInputValue;
-  if (isNaN(event.target.value)) {
+  if (Number.isNaN(Number(event.target.value))) {
     event.target.value = "00";
   } else {
     event.target.value = event.target.value.toString();
   }
   decoratedInputValue = event.target.value.toString();
 
-  const inputValue = parseInt(event.target.value, 10);
-  const max = parseInt(event.target.dataset.max, 10);
-  const min = parseInt(event.target.dataset.min, 10);
+  const inputValue = Number.parseInt(event.target.value, 10);
+  const max = Number.parseInt(event.target.dataset.max, 10);
+  const min = Number.parseInt(event.target.dataset.min, 10);
   if (inputValue > max) {
     decoratedInputValue = max.toString().padStart(2, "0");
   } else if (inputValue < min) {
@@ -266,8 +266,8 @@ function actionUpDown(input, goUp, selectIt = false) {
 }
 
 function getNewValue(input) {
-  const newVal = parseInt(input.value, 10);
-  return isNaN(newVal) ? 0 : newVal;
+  const newVal = Number.parseInt(input.value, 10);
+  return Number.isNaN(newVal) ? 0 : newVal;
 }
 
 function handleArrowUp(newVal, tUnit, input) {
@@ -294,7 +294,7 @@ function handleArrowDown(newVal, tUnit) {
 function incrementPreviousUnit(input) {
   if (input.dataset.index > 0) {
     const prevUnit = document.querySelector(
-      `input[data-index="${parseInt(input.dataset.index, 10) - 1}"]`,
+      `input[data-index="${Number.parseInt(input.dataset.index, 10) - 1}"]`,
     );
     if (prevUnit) actionUpDown(prevUnit, true);
   }
@@ -324,8 +324,8 @@ function updateInputValue(input, newVal, tUnit) {
  * @param {string} [size] - 'max' or 'min' to set boundary days.
  */
 function secondToDate(totalSec, size) {
-  totalSec = parseInt(totalSec, 10);
-  if (!isNaN(totalSec)) {
+  totalSec = Number.parseInt(totalSec, 10);
+  if (!Number.isNaN(totalSec)) {
     seconds.value = totalSec % 60;
     minutes.value = (Math.floor(totalSec - seconds.value) / 60) % 60;
     hours.value = Math.floor(totalSec / 3600) % 24;
@@ -344,8 +344,8 @@ function calculateTotalSeconds() {
   let total = 0;
 
   for (const unit in tUnits.value) {
-    const val = parseInt(tUnits.value[unit].val, 10);
-    if (!isNaN(val)) {
+    const val = Number.parseInt(tUnits.value[unit].val, 10);
+    if (!Number.isNaN(val)) {
       total += val * tUnits.value[unit].rate;
     }
   }
diff --git a/src/module/abbreviateNumber.js b/src/module/abbreviateNumber.js
index 20e1a6c..e857175 100644
--- a/src/module/abbreviateNumber.js
+++ b/src/module/abbreviateNumber.js
@@ -22,8 +22,8 @@ export default function abbreviateNumber(totalSeconds) {
   let result = "";
   let symbols = ["d", "h", "m", "s"];
 
-  totalSeconds = parseInt(totalSeconds);
-  if (!isNaN(totalSeconds)) {
+  totalSeconds = Number.parseInt(totalSeconds);
+  if (!Number.isNaN(totalSeconds)) {
     seconds = totalSeconds % 60;
     minutes = (Math.floor(totalSeconds - seconds) / 60) % 60;
     hours = Math.floor(totalSeconds / 3600) % 24;
diff --git a/src/module/setChartData.js b/src/module/setChartData.js
index 23054c6..23068d7 100644
--- a/src/module/setChartData.js
+++ b/src/module/setChartData.js
@@ -231,7 +231,7 @@ export function getXIndex(data, xValue) {
  *   or null if the input is NaN.
  */
 export function formatTime(seconds) {
-  if (!isNaN(seconds)) {
+  if (!Number.isNaN(Number(seconds))) {
     const remainingSeconds = seconds % 60;
     const minutes = (Math.floor(seconds - remainingSeconds) / 60) % 60;
     const hours = Math.floor(seconds / 3600) % 24;
diff --git a/src/module/sortNumEngZhtw.js b/src/module/sortNumEngZhtw.js
index 34e8b54..3824496 100644
--- a/src/module/sortNumEngZhtw.js
+++ b/src/module/sortNumEngZhtw.js
@@ -17,10 +17,10 @@
  */
 export function sortNumEngZhtw(data) {
   return data.sort((a, b) => {
-    const isANumber = !isNaN(parseFloat(a)) && isFinite(a);
-    const isBNumber = !isNaN(parseFloat(b)) && isFinite(b);
+    const isANumber = !Number.isNaN(Number.parseFloat(a)) && Number.isFinite(Number(a));
+    const isBNumber = !Number.isNaN(Number.parseFloat(b)) && Number.isFinite(Number(b));
 
-    if (isANumber && isBNumber) return parseFloat(a) - parseFloat(b);
+    if (isANumber && isBNumber) return Number.parseFloat(a) - Number.parseFloat(b);
 
     if (isANumber) return -1;
     if (isBNumber) return 1;
@@ -40,10 +40,10 @@ export function sortNumEngZhtw(data) {
  * @returns {number} Negative if a < b, positive if a > b, zero if equal.
  */
 export function sortNumEngZhtwForFilter(a, b) {
-  const isANumber = !isNaN(parseFloat(a)) && isFinite(a);
-  const isBNumber = !isNaN(parseFloat(b)) && isFinite(b);
+  const isANumber = !Number.isNaN(Number.parseFloat(a)) && Number.isFinite(Number(a));
+  const isBNumber = !Number.isNaN(Number.parseFloat(b)) && Number.isFinite(Number(b));
 
-  if (isANumber && isBNumber) return parseFloat(a) - parseFloat(b);
+  if (isANumber && isBNumber) return Number.parseFloat(a) - Number.parseFloat(b);
 
   if (isANumber) return -1;
   if (isBNumber) return 1;