diff --git a/files/en-us/web/api/mutationobserver/observe/index.md b/files/en-us/web/api/mutationobserver/observe/index.md
index f7b2aa07fae631b..79e23efd8b8e333 100644
--- a/files/en-us/web/api/mutationobserver/observe/index.md
+++ b/files/en-us/web/api/mutationobserver/observe/index.md
@@ -130,18 +130,9 @@ for example, reflect changes to users' nicknames, or to mark them as away from k
 ```js
 function callback(mutationList) {
   mutationList.forEach((mutation) => {
-    switch (mutation.type) {
-      case "attributes":
-        switch (mutation.attributeName) {
-          case "status":
-            userStatusChanged(mutation.target.username, mutation.target.status);
-            break;
-          case "username":
-            usernameChanged(mutation.oldValue, mutation.target.username);
-            break;
-        }
-        break;
-    }
+    const { attributeName, oldValue, target } = mutation;
+    const newValue = target.getAttribute(attributeName);
+    console.log(`${attributeName}: ${oldValue} -> ${newValue}`);
   });
 }