diff --git a/src/widget/timeinterval/dateinterval.js b/src/widget/timeinterval/dateinterval.js
index 12a1d2b27..97f2b0f73 100644
--- a/src/widget/timeinterval/dateinterval.js
+++ b/src/widget/timeinterval/dateinterval.js
@@ -109,10 +109,10 @@ BI.DateInterval = BI.inherit(BI.Single, {
             }
         });
 
-        combo.on(BI.DynamicDateCombo.EVENT_BEFORE_POPUPVIEW, function () {
-            self.left.hidePopupView();
-            self.right.hidePopupView();
-        });
+        // combo.on(BI.DynamicDateCombo.EVENT_BEFORE_POPUPVIEW, function () {
+        //     self.left.hidePopupView();
+        //     self.right.hidePopupView();
+        // });
 
         combo.on(BI.DynamicDateCombo.EVENT_CONFIRM, function () {
             BI.Bubbles.hide("error");
diff --git a/src/widget/timeinterval/timeinterval.js b/src/widget/timeinterval/timeinterval.js
index 83bd84aa0..20d307da1 100644
--- a/src/widget/timeinterval/timeinterval.js
+++ b/src/widget/timeinterval/timeinterval.js
@@ -109,10 +109,11 @@ BI.TimeInterval = BI.inherit(BI.Single, {
             }
         });
 
-        combo.on(BI.DynamicDateTimeCombo.EVENT_BEFORE_POPUPVIEW, function () {
-            self.left.hidePopupView();
-            self.right.hidePopupView();
-        });
+        // 不知道干啥的,先注释掉
+        // combo.on(BI.DynamicDateTimeCombo.EVENT_BEFORE_POPUPVIEW, function () {
+        //     self.left.hidePopupView();
+        //     self.right.hidePopupView();
+        // });
 
         combo.on(BI.DynamicDateTimeCombo.EVENT_CONFIRM, function () {
             BI.Bubbles.hide("error");
diff --git a/typescript/core/widget.ts b/typescript/core/widget.ts
index 65a6a9b5b..a3c5ddf92 100644
--- a/typescript/core/widget.ts
+++ b/typescript/core/widget.ts
@@ -247,7 +247,7 @@ export interface _Widget extends _OB {
     /**
      * 根据wigetname获取子元素实例
      */
-    getWidgetByName(_name: string): _Widget;
+    getWidgetByName(_name: string): _Widget | undefined;
 
     /**
      * 移除子元素