From d4b922bbca3442a1e5e4e63f63d4a077c49ea00e Mon Sep 17 00:00:00 2001
From: zhangchen <zhangchen915@outlook.com>
Date: Sun, 5 Apr 2020 18:17:41 +0800
Subject: [PATCH] fix: correctly remove once listener with event handler return
 null

---
 src/core/instance/events.js                  | 6 ++----
 src/platforms/weex/runtime/modules/events.js | 6 ++----
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/core/instance/events.js b/src/core/instance/events.js
index 4d5bb552850..8ebbeea38d5 100644
--- a/src/core/instance/events.js
+++ b/src/core/instance/events.js
@@ -32,10 +32,8 @@ function remove (event, fn) {
 function createOnceHandler (event, fn) {
   const _target = target
   return function onceHandler () {
-    const res = fn.apply(null, arguments)
-    if (res !== null) {
-      _target.$off(event, onceHandler)
-    }
+    fn.apply(null, arguments)
+    _target.$off(event, onceHandler)
   }
 }
 
diff --git a/src/platforms/weex/runtime/modules/events.js b/src/platforms/weex/runtime/modules/events.js
index c34719483a8..1feac1f5bd6 100755
--- a/src/platforms/weex/runtime/modules/events.js
+++ b/src/platforms/weex/runtime/modules/events.js
@@ -7,10 +7,8 @@ let target: any
 function createOnceHandler (event, handler, capture) {
   const _target = target // save current target element in closure
   return function onceHandler () {
-    const res = handler.apply(null, arguments)
-    if (res !== null) {
-      remove(event, onceHandler, capture, _target)
-    }
+    handler.apply(null, arguments)
+    remove(event, onceHandler, capture, _target)
   }
 }