From 3f148a9086465859e46340ef3af8745a07325a73 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=B4=A4=E5=BF=83?=
 <3277200+sentsim@users.noreply.github.com>
Date: Sat, 9 Dec 2023 12:55:02 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=20`treeTable.reloadData()`?=
 =?UTF-8?q?=20=E5=9C=A8=E6=9F=90=E4=BA=9B=E6=83=85=E5=86=B5=E4=B8=8B?=
 =?UTF-8?q?=E6=8A=A5=E9=94=99=E7=9A=84=E9=97=AE=E9=A2=98=20Closes:=20https?=
 =?UTF-8?q?://gitee.com/layui/layui/issues/I8M5HS?=
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---
 src/modules/treeTable.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/treeTable.js b/src/modules/treeTable.js
index 016cecd1..d8d3ad91 100644
--- a/src/modules/treeTable.js
+++ b/src/modules/treeTable.js
@@ -93,7 +93,7 @@ layui.define(['table'], function (exports) {
   var updateCache = function (id, childrenKey, data) {
     var tableCache = table.cache[id];
     layui.each(data || tableCache, function (index, item) {
-      var itemDataIndex = item[LAY_DATA_INDEX];
+      var itemDataIndex = item[LAY_DATA_INDEX] || '';
       if (itemDataIndex.indexOf('-') !== -1) {
         tableCache[itemDataIndex] = item
       }