From f045d477db2b0b24cf4f54b070c93137eb4a6222 Mon Sep 17 00:00:00 2001
From: windy <1374721899@qq.com>
Date: Sun, 26 Apr 2020 17:09:02 +0800
Subject: [PATCH] =?UTF-8?q?=E6=97=A0JIRA=E4=BB=BB=E5=8A=A1=20assert?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/base/tree/ztree/treetrender.page.service.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/base/tree/ztree/treetrender.page.service.js b/src/base/tree/ztree/treetrender.page.service.js
index 628c7ba44..e1d7edb81 100644
--- a/src/base/tree/ztree/treetrender.page.service.js
+++ b/src/base/tree/ztree/treetrender.page.service.js
@@ -56,8 +56,8 @@
         },
 
         removeNodeList: function (tId) {
-            this.nodeLists[tId].loadWidget.destroy();
-            this.nodeLists[tId].loadWidget = null;
+            this.nodeLists[tId] && this.nodeLists[tId].loadWidget.destroy();
+            this.nodeLists[tId] && (this.nodeLists[tId].loadWidget = null);
             delete this.nodeLists[tId];
             if (BI.size(this.nodeLists) === 0) {
                 this.clear();