From fec8a5de0531b3770c7d23e7e8a42a799ab627e6 Mon Sep 17 00:00:00 2001
From: btea <2356281422@qq.com>
Date: Mon, 18 Mar 2024 07:34:27 +0800
Subject: [PATCH] fix(components): [tree] the value of append can be zero
 (#16130)

---
 packages/components/tree/src/model/tree-store.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/components/tree/src/model/tree-store.ts b/packages/components/tree/src/model/tree-store.ts
index 78fd406d5c..d5ec368d30 100644
--- a/packages/components/tree/src/model/tree-store.ts
+++ b/packages/components/tree/src/model/tree-store.ts
@@ -1,5 +1,5 @@
 // @ts-nocheck
-import { hasOwn, isObject } from '@element-plus/utils'
+import { hasOwn, isObject, isPropAbsent } from '@element-plus/utils'
 import Node from './node'
 import { getNodeKey } from './util'
 
@@ -144,7 +144,9 @@ export default class TreeStore {
   }
 
   append(data: TreeNodeData, parentData: TreeNodeData | TreeKey | Node): void {
-    const parentNode = parentData ? this.getNode(parentData) : this.root
+    const parentNode = !isPropAbsent(parentData)
+      ? this.getNode(parentData)
+      : this.root
 
     if (parentNode) {
       parentNode.insertChild({ data })