From 8df23e2d06e8b152e2cd95ded0bdb3302a583fbe Mon Sep 17 00:00:00 2001
From: afc163 <afc163@gmail.com>
Date: Sat, 3 Dec 2016 15:50:36 +0800
Subject: [PATCH] revert value undefined for resetFields, close #3846

---
 components/date-picker/createPicker.tsx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/components/date-picker/createPicker.tsx b/components/date-picker/createPicker.tsx
index 308a50602..588a4727b 100644
--- a/components/date-picker/createPicker.tsx
+++ b/components/date-picker/createPicker.tsx
@@ -38,7 +38,7 @@ export default function createPicker(TheCalendar) {
     },
 
     componentWillReceiveProps(nextProps: PickerProps) {
-      if (nextProps.value !== undefined) {
+      if ('value' in nextProps) {
         this.setState({
           value: nextProps.value,
           tempValue: nextProps.value,
@@ -55,7 +55,7 @@ export default function createPicker(TheCalendar) {
 
     handleChange(value) {
       const props = this.props;
-      if (props.value === undefined) {
+      if (!('value' in props)) {
         this.setState({ value });
       }
       props.onChange(value, (value && value.format(props.format)) || '');