diff --git a/problems/0024.两两交换链表中的节点.md b/problems/0024.两两交换链表中的节点.md
index e636bfff..7ef86562 100644
--- a/problems/0024.两两交换链表中的节点.md
+++ b/problems/0024.两两交换链表中的节点.md
@@ -254,20 +254,19 @@ TypeScript：
 
 ```typescript
 function swapPairs(head: ListNode | null): ListNode | null {
-  const dummyHead: ListNode = new ListNode(0, head);
-  let cur: ListNode = dummyHead;
-  while(cur.next !== null && cur.next.next !== null) {
-    const tem: ListNode = cur.next;
-    const tem1: ListNode = cur.next.next.next;
-    
-    cur.next = cur.next.next; // step 1
-    cur.next.next = tem; // step 2
-    cur.next.next.next = tem1; // step 3
-    
-    cur = cur.next.next;
-  }
-  return dummyHead.next;
-}
+    const dummyNode: ListNode = new ListNode(0, head);
+    let curNode: ListNode | null = dummyNode;
+    while (curNode && curNode.next && curNode.next.next) {
+        let firstNode: ListNode = curNode.next,
+            secNode: ListNode = curNode.next.next,
+            thirdNode: ListNode | null = curNode.next.next.next;
+        curNode.next = secNode;
+        secNode.next = firstNode;
+        firstNode.next = thirdNode;
+        curNode = firstNode;
+    }
+    return dummyNode.next;
+};
 ```
 
 Kotlin: