refactor: 중복 코드 함수화

Author: itso-wavy

Diff for: .vscode/settings.json

@@ -1,4 +1,4 @@
 {
   "editor.formatOnSave": true,
-  "liveServer.settings.port": 5503
+  "liveServer.settings.port": 5504
 }

Diff for: src/js/chartpage.js

@@ -42,16 +42,18 @@ const $jsBtn = document.getElementById('js-btn');
 
 $pyBtn.addEventListener('click', (event) => {
   lang = 'py';
-  updateCharts();
-  changeLengBtnStyle(event);
-  scrollToTop();
+  changeLang(event);
 });
 $jsBtn.addEventListener('click', (event) => {
   lang = 'js';
+  changeLang(event);
+});
+
+function changeLang(event) {
   updateCharts();
   changeLengBtnStyle(event);
   scrollToTop();
-});
+}
 
 /* 그려지지 않은 캔버스 숨김 */
 const canvasList = [...document.querySelectorAll('.sec-charts li')];

Diff for: src/js/darkmode.js

@@ -36,13 +36,15 @@ export function toggleDarkMode() {
   renderDarkMode($darkmode);
 
   $darkmode.addEventListener('click', () => {
-    isDarkMode = !isDarkMode;
-    sessionStorage.setItem('algoview', isDarkMode);
-    renderDarkMode($darkmode);
+    updateMode();
   });
   $darkmode2.addEventListener('click', () => {
+    updateMode();
+  });
+
+  function updateMode() {
     isDarkMode = !isDarkMode;
     sessionStorage.setItem('algoview', isDarkMode);
     renderDarkMode($darkmode);
-  });
+  }
 }