diff --git a/demo/config.js b/demo/config.js
index 71893d1b28..d82b30363f 100644
--- a/demo/config.js
+++ b/demo/config.js
@@ -1535,8 +1535,7 @@ Demo.CONSTANTS = {
         {id: 22, pId: 2, value: "第二级文件2", text: "第二级文件2"},
         {id: 211, pId: 21, value: "第三级目录2", text: "第三级目录2"},
         {id: 212, pId: 21, value: "第三级文件2", text: "第三级文件2"},
-        {id: 2111, pId: 211, value: "第四级文件1", text: "第四级文件1"},
-        {id: 3, pId: -1, value: "第一级目录3", text: "第一级目录3", isParent: true}],
+        {id: 2111, pId: 211, value: "第四级文件1", text: "第四级文件1"}],
     LEVELTREE: [{
         id: 1,
         text: "第一项",
diff --git a/dist/bundle.ie.js b/dist/bundle.ie.js
index d8e37f4a6b..b734939f67 100644
--- a/dist/bundle.ie.js
+++ b/dist/bundle.ie.js
@@ -15149,7 +15149,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             }
         }
         if (oldStartIdx > oldEndIdx) {
-            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1];
             addVnodes(before, newCh, newStartIdx, newEndIdx);
         } else if (newStartIdx > newEndIdx) {
             removeVnodes(oldCh, oldStartIdx, oldEndIdx);
@@ -72008,6 +72008,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
         self._setComboValueChangedEvent(self.smallCombo);
         self._setEditorValueChangedEvent(self.bigEditor);
         self._setEditorValueChangedEvent(self.smallEditor);
+
+        self._checkValidation();
     },
 
     _checkValidation: function () {
@@ -72285,6 +72287,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
             }
             self.bigCombo.setValue(combo_value);
         }
+
+        this._checkValidation();
     },
 
 
diff --git a/dist/bundle.js b/dist/bundle.js
index 375794e9ac..3b31bc0754 100644
--- a/dist/bundle.js
+++ b/dist/bundle.js
@@ -15149,7 +15149,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             }
         }
         if (oldStartIdx > oldEndIdx) {
-            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1];
             addVnodes(before, newCh, newStartIdx, newEndIdx);
         } else if (newStartIdx > newEndIdx) {
             removeVnodes(oldCh, oldStartIdx, oldEndIdx);
@@ -72547,6 +72547,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
         self._setComboValueChangedEvent(self.smallCombo);
         self._setEditorValueChangedEvent(self.bigEditor);
         self._setEditorValueChangedEvent(self.smallEditor);
+
+        self._checkValidation();
     },
 
     _checkValidation: function () {
@@ -72824,6 +72826,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
             }
             self.bigCombo.setValue(combo_value);
         }
+
+        this._checkValidation();
     },
 
 
diff --git a/dist/core.js b/dist/core.js
index 336e1890dd..b4b8f58cc0 100644
--- a/dist/core.js
+++ b/dist/core.js
@@ -15149,7 +15149,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             }
         }
         if (oldStartIdx > oldEndIdx) {
-            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1];
             addVnodes(before, newCh, newStartIdx, newEndIdx);
         } else if (newStartIdx > newEndIdx) {
             removeVnodes(oldCh, oldStartIdx, oldEndIdx);
diff --git a/dist/demo.js b/dist/demo.js
index 29f067c2a9..3b6dcb8bca 100644
--- a/dist/demo.js
+++ b/dist/demo.js
@@ -13297,8 +13297,7 @@ Demo.CONSTANTS = {
         {id: 22, pId: 2, value: "第二级文件2", text: "第二级文件2"},
         {id: 211, pId: 21, value: "第三级目录2", text: "第三级目录2"},
         {id: 212, pId: 21, value: "第三级文件2", text: "第三级文件2"},
-        {id: 2111, pId: 211, value: "第四级文件1", text: "第四级文件1"},
-        {id: 3, pId: -1, value: "第一级目录3", text: "第一级目录3", isParent: true}],
+        {id: 2111, pId: 211, value: "第四级文件1", text: "第四级文件1"}],
     LEVELTREE: [{
         id: 1,
         text: "第一项",
diff --git a/dist/fineui.ie.js b/dist/fineui.ie.js
index f9fa3a9eb7..a069f95b73 100644
--- a/dist/fineui.ie.js
+++ b/dist/fineui.ie.js
@@ -15391,7 +15391,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             }
         }
         if (oldStartIdx > oldEndIdx) {
-            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1];
             addVnodes(before, newCh, newStartIdx, newEndIdx);
         } else if (newStartIdx > newEndIdx) {
             removeVnodes(oldCh, oldStartIdx, oldEndIdx);
@@ -72250,6 +72250,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
         self._setComboValueChangedEvent(self.smallCombo);
         self._setEditorValueChangedEvent(self.bigEditor);
         self._setEditorValueChangedEvent(self.smallEditor);
+
+        self._checkValidation();
     },
 
     _checkValidation: function () {
@@ -72527,6 +72529,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
             }
             self.bigCombo.setValue(combo_value);
         }
+
+        this._checkValidation();
     },
 
 
diff --git a/dist/fineui.js b/dist/fineui.js
index 6c6d7e98d3..dddd490418 100644
--- a/dist/fineui.js
+++ b/dist/fineui.js
@@ -15391,7 +15391,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             }
         }
         if (oldStartIdx > oldEndIdx) {
-            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1];
             addVnodes(before, newCh, newStartIdx, newEndIdx);
         } else if (newStartIdx > newEndIdx) {
             removeVnodes(oldCh, oldStartIdx, oldEndIdx);
@@ -72789,6 +72789,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
         self._setComboValueChangedEvent(self.smallCombo);
         self._setEditorValueChangedEvent(self.bigEditor);
         self._setEditorValueChangedEvent(self.smallEditor);
+
+        self._checkValidation();
     },
 
     _checkValidation: function () {
@@ -73066,6 +73068,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
             }
             self.bigCombo.setValue(combo_value);
         }
+
+        this._checkValidation();
     },
 
 
diff --git a/dist/fineui_without_jquery_polyfill.js b/dist/fineui_without_jquery_polyfill.js
index 02fea59fd9..017b84cb73 100644
--- a/dist/fineui_without_jquery_polyfill.js
+++ b/dist/fineui_without_jquery_polyfill.js
@@ -14895,7 +14895,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             }
         }
         if (oldStartIdx > oldEndIdx) {
-            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1];
             addVnodes(before, newCh, newStartIdx, newEndIdx);
         } else if (newStartIdx > newEndIdx) {
             removeVnodes(oldCh, oldStartIdx, oldEndIdx);
@@ -55671,6 +55671,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
         self._setComboValueChangedEvent(self.smallCombo);
         self._setEditorValueChangedEvent(self.bigEditor);
         self._setEditorValueChangedEvent(self.smallEditor);
+
+        self._checkValidation();
     },
 
     _checkValidation: function () {
@@ -55948,6 +55950,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
             }
             self.bigCombo.setValue(combo_value);
         }
+
+        this._checkValidation();
     },
 
 
diff --git a/dist/widget.js b/dist/widget.js
index 11f7808449..663ccabde9 100644
--- a/dist/widget.js
+++ b/dist/widget.js
@@ -13852,6 +13852,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
         self._setComboValueChangedEvent(self.smallCombo);
         self._setEditorValueChangedEvent(self.bigEditor);
         self._setEditorValueChangedEvent(self.smallEditor);
+
+        self._checkValidation();
     },
 
     _checkValidation: function () {
@@ -14129,6 +14131,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
             }
             self.bigCombo.setValue(combo_value);
         }
+
+        this._checkValidation();
     },
 
 
diff --git a/src/core/wrapper/layout.js b/src/core/wrapper/layout.js
index b689fc57af..ec1be241b6 100644
--- a/src/core/wrapper/layout.js
+++ b/src/core/wrapper/layout.js
@@ -427,7 +427,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             }
         }
         if (oldStartIdx > oldEndIdx) {
-            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+            before = BI.isNull(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1];
             addVnodes(before, newCh, newStartIdx, newEndIdx);
         } else if (newStartIdx > newEndIdx) {
             removeVnodes(oldCh, oldStartIdx, oldEndIdx);
diff --git a/src/widget/numberinterval/numberinterval.js b/src/widget/numberinterval/numberinterval.js
index ded3aa37f1..5a689681c0 100644
--- a/src/widget/numberinterval/numberinterval.js
+++ b/src/widget/numberinterval/numberinterval.js
@@ -240,6 +240,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
         self._setComboValueChangedEvent(self.smallCombo);
         self._setEditorValueChangedEvent(self.bigEditor);
         self._setEditorValueChangedEvent(self.smallEditor);
+
+        self._checkValidation();
     },
 
     _checkValidation: function () {
@@ -517,6 +519,8 @@ BI.NumberInterval = BI.inherit(BI.Single, {
             }
             self.bigCombo.setValue(combo_value);
         }
+
+        this._checkValidation();
     },