sync

lib/utility/cookie.js

@@ -22,7 +22,7 @@ export function getCookie(name) {
     const cookies = document.cookie.split(';');
     for (let cookie of cookies) {
         cookie = cookie.trim();
-        if (cookie.indexOf(name) === 0) {
+        if (cookie.startsWith(name)) {
             return decodeURIComponent(cookie.substring(name.length));
         }
     }

lib/utility/strings.js

@@ -10,16 +10,16 @@ export function contains(s, key, ignoreCase) {
         key = String(key);
     }
     if (ignoreCase) {
-        return s.toLowerCase().indexOf(key.toLowerCase()) >= 0;
+        return s.toLowerCase().includes(key.toLowerCase());
     }
-    return s.indexOf(key) >= 0;
+    return s.includes(key);
 }
 
 export function endsWith(s, suffix) {
     if (nullOrEmpty(s) || nullOrEmpty(suffix)) {
         return false;
     }
-    return s.indexOf(suffix) === s.length - suffix.length;
+    return s.endsWith(suffix); // === s.length - suffix.length;
 }
 
 export function padStart(s, num, char) {