From 8761038f8138b228ff1256ce6e12d9ede8c9c903 Mon Sep 17 00:00:00 2001
From: chonggit <156310943@qq.com>
Date: Thu, 7 Dec 2017 23:27:29 +0800
Subject: [PATCH] fix(datepicker): if value is null dont reset date to 1970
 (#3207)

fix if state.value == null _newState.value will set to '1970-01-01 08:00:00'
---
 src/timepicker/reducer/timepicker.reducer.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/timepicker/reducer/timepicker.reducer.ts b/src/timepicker/reducer/timepicker.reducer.ts
index e9ec0d3f3f..413f5cd667 100644
--- a/src/timepicker/reducer/timepicker.reducer.ts
+++ b/src/timepicker/reducer/timepicker.reducer.ts
@@ -100,7 +100,9 @@ export function timepickerReducer(state = initialState, action: Action) {
       };
 
       if (state.config.showMeridian !== _newState.config.showMeridian) {
-        _newState.value = new Date(state.value);
+        if(state.value){
+          _newState.value = new Date(state.value);
+        }
       }
 
       return Object.assign({}, state, _newState);