From 6e1871dc680887b42bc980685900febc36a05690 Mon Sep 17 00:00:00 2001
From: Danny Zhong <lesarde@gmail.com>
Date: Sat, 24 Oct 2020 22:47:39 +0800
Subject: [PATCH] fix no triggerEvent() function when invoke this.$emit() in
 page.

---
 src/platforms/mp-alipay/runtime/wrapper/page-parser.js | 6 ++++--
 src/platforms/mp-alipay/runtime/wrapper/util.js        | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/platforms/mp-alipay/runtime/wrapper/page-parser.js b/src/platforms/mp-alipay/runtime/wrapper/page-parser.js
index b8a24cfe54..500bdff6e1 100644
--- a/src/platforms/mp-alipay/runtime/wrapper/page-parser.js
+++ b/src/platforms/mp-alipay/runtime/wrapper/page-parser.js
@@ -17,6 +17,7 @@ import {
   handleRef,
   handleLink,
   initBehavior,
+  triggerEvent,
   initChildVues,
   initSpecialMethods
 } from './util'
@@ -85,7 +86,8 @@ export default function parsePage (vuePageOptions) {
     },
     __r: handleRef,
     __e: handleEvent,
-    __l: handleLink
+    __l: handleLink,
+    triggerEvent
   }
 
   initHooks(pageOptions, hooks, vuePageOptions)
@@ -99,4 +101,4 @@ export default function parsePage (vuePageOptions) {
   }
 
   return pageOptions
-}
+}
diff --git a/src/platforms/mp-alipay/runtime/wrapper/util.js b/src/platforms/mp-alipay/runtime/wrapper/util.js
index f385dd3577..ef741753af 100644
--- a/src/platforms/mp-alipay/runtime/wrapper/util.js
+++ b/src/platforms/mp-alipay/runtime/wrapper/util.js
@@ -122,7 +122,7 @@ export function handleRef (ref) {
 }
 
 export function triggerEvent (type, detail, options) {
-  const handler = this.props[customize('on-' + type)]
+  const handler = this.props && this.props[customize('on-' + type)]
   if (!handler) {
     return
   }
-- 
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