From 40be78514f4f07384d4948208cde1bb0ec2fba49 Mon Sep 17 00:00:00 2001
From: liuyalong <3208848109@qq.com>
Date: Wed, 13 Nov 2024 20:33:05 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E4=BA=86javaScript=E4=B8=AD?=
 =?UTF-8?q?=E5=87=BA=E9=98=9F=E7=9A=84=E9=97=AE=E9=A2=98?=
MIME-Version: 1.0
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---
 javascript/09_queue/QueueBasedOnLinkedList.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/javascript/09_queue/QueueBasedOnLinkedList.js b/javascript/09_queue/QueueBasedOnLinkedList.js
index 75918585..a1cbe4e7 100644
--- a/javascript/09_queue/QueueBasedOnLinkedList.js
+++ b/javascript/09_queue/QueueBasedOnLinkedList.js
@@ -31,6 +31,9 @@ class QueueBasedOnLinkedList {
         if (this.head !== null) {
             const value = this.head.element
             this.head = this.head.next
+            if (this.head === null) {
+                this.tail = null
+            }
             return value
         } else {
             return -1