From 29a93c3e4dbc332e7b3bd76c1fd15f10c62dd3a7 Mon Sep 17 00:00:00 2001
From: msidolphin <OoMass-EffectoO@hotmail.com>
Date: Mon, 29 Jul 2019 14:46:11 +0800
Subject: [PATCH] fix#6129

---
 src/components/date-picker/panel/Date/date-range.vue | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/components/date-picker/panel/Date/date-range.vue b/src/components/date-picker/panel/Date/date-range.vue
index f7b4cf1e..07bbdef4 100644
--- a/src/components/date-picker/panel/Date/date-range.vue
+++ b/src/components/date-picker/panel/Date/date-range.vue
@@ -296,7 +296,11 @@
             },
             changePanelDate(panel, type, increment, updateOtherPanel = true){
                 const current = new Date(this[`${panel}PanelDate`]);
-                current[`set${type}`](current[`get${type}`]() + increment);
+                if (panel === 'left') {
+                    current[`set${type}`](current[`get${type}`](), 0);
+                } else {
+                    current[`set${type}`](current[`get${type}`]() + increment);
+                }
                 this[`${panel}PanelDate`] = current;
 
                 if (!updateOtherPanel) return;