diff --git a/js/src/dom/event-handler.js b/js/src/dom/event-handler.js
index 439a3f1881..ceb6a6e6ee 100644
--- a/js/src/dom/event-handler.js
+++ b/js/src/dom/event-handler.js
@@ -235,7 +235,7 @@ const EventHandler = {
     const [delegation, originalHandler, typeEvent] = normalizeParams(originalTypeEvent, handler, delegationFn)
     const inNamespace = typeEvent !== originalTypeEvent
     const events = getEvent(element)
-    const isNamespace = originalTypeEvent.charAt(0) === '.'
+    const isNamespace = originalTypeEvent.startsWith('.')
 
     if (typeof originalHandler !== 'undefined') {
       // Simplest case: handler is passed, remove that listener ONLY.
diff --git a/site/assets/js/search.js b/site/assets/js/search.js
index 6569b28d69..cce2bcd0d1 100644
--- a/site/assets/js/search.js
+++ b/site/assets/js/search.js
@@ -45,7 +45,7 @@
         var currentUrl = getOrigin()
         var liveUrl = 'https://v5.getbootstrap.com/'
 
-        hit.url = currentUrl.lastIndexOf(liveUrl, 0) === 0 ?
+        hit.url = currentUrl.startsWith(liveUrl) ?
           // On production, return the result as is
           hit.url :
           // On development or Netlify, replace `hit.url` with a trailing slash,