From ef1e74786906d66c2ab33b63ca2acf0ae089c4d1 Mon Sep 17 00:00:00 2001
From: rex <rexkaneki@gmail.com>
Date: Tue, 26 Nov 2019 21:33:21 +0800
Subject: [PATCH] fix(Tab): fix prop active not work in init (#2395)

fix #2390
---
 example/pages/tab/index.wxml | 2 +-
 packages/tabs/index.ts       | 6 ++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/example/pages/tab/index.wxml b/example/pages/tab/index.wxml
index 0fe6f836..81d33a4e 100644
--- a/example/pages/tab/index.wxml
+++ b/example/pages/tab/index.wxml
@@ -13,7 +13,7 @@
 </demo-block>
 
 <demo-block title="通过名称匹配">
-  <van-tabs active="a">
+  <van-tabs active="b">
     <van-tab
       wx:for="{{ tabsWithName }}"
       wx:key="index"
diff --git a/packages/tabs/index.ts b/packages/tabs/index.ts
index 85d6431d..ac15181d 100644
--- a/packages/tabs/index.ts
+++ b/packages/tabs/index.ts
@@ -173,8 +173,10 @@ VantComponent({
       const matched = children.filter(
         (child: TrivialInstance) => child.getComputedName() === name
       );
-      const defaultIndex = (children[0] || {}).index || 0;
-      this.setCurrentIndex(matched.length ? matched[0].index : defaultIndex);
+
+      if (matched.length) {
+        this.setCurrentIndex(matched[0].index);
+      }
     },
 
     setCurrentIndex(currentIndex) {