From ed7f6b1324ff7e84a4900dd0be81deab5182a73f Mon Sep 17 00:00:00 2001
From: power17 <1410837981@qq.com>
Date: Tue, 5 Sep 2023 15:39:01 +0800
Subject: [PATCH] Update LinkedListAlgo.js

---
 javascript/07_linkedlist/LinkedListAlgo.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/javascript/07_linkedlist/LinkedListAlgo.js b/javascript/07_linkedlist/LinkedListAlgo.js
index 77695c99..32ee6d14 100644
--- a/javascript/07_linkedlist/LinkedListAlgo.js
+++ b/javascript/07_linkedlist/LinkedListAlgo.js
@@ -169,7 +169,7 @@ class LinkedList {
     findMiddleNode() {
         let fast = this.head
         let slow = this.head
-        while (fast.next !== null && fast.next.next !== null) {
+        while (fast.next !== null && fast.next !== null && fast.next.next !== null) {
             fast = fast.next.next
             slow = slow.next
         }
@@ -247,4 +247,4 @@ let sortedList = mergeSortedLists(sortedList1.head.next, sortedList2.head.next)
 while (sortedList !== null) {
     console.log(sortedList.element)
     sortedList = sortedList.next
-}
\ No newline at end of file
+}