From a14ad6e38479743187b6469e6055060916f3257b Mon Sep 17 00:00:00 2001
From: ShuaiKang Zhang <zhangshuaikang_zsk@youzan.com>
Date: Thu, 10 Oct 2019 17:58:50 +0800
Subject: [PATCH] fix(Tabs): fix some error when component init (#2133)

---
 packages/tabs/index.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/tabs/index.ts b/packages/tabs/index.ts
index 6c13e522..55c1817a 100644
--- a/packages/tabs/index.ts
+++ b/packages/tabs/index.ts
@@ -96,7 +96,7 @@ VantComponent({
     trackStyle: '',
     wrapStyle: '',
     position: '',
-    currentIndex: null,
+    currentIndex: 0,
   },
 
   watch: {
@@ -239,7 +239,7 @@ VantComponent({
 
     setActiveTab() {
       if (!isDef(this.currentName)) {
-        this.currentName = this.data.active || this.children[0].computedName;
+        this.currentName = this.data.active || (this.children[0] || {}).computedName;
       }
 
       this.children.forEach((item: WechatMiniprogram.Component.TrivialInstance, index: number) => {