diff --git a/demo/js/core/abstract/demo.virtual_group.js b/demo/js/core/abstract/demo.virtual_group.js
index 00b38da35..afda6ec1e 100644
--- a/demo/js/core/abstract/demo.virtual_group.js
+++ b/demo/js/core/abstract/demo.virtual_group.js
@@ -7,6 +7,7 @@ Demo.Func = BI.inherit(BI.Widget, {
         var items = BI.map(BI.range(1000), function (i) {
             return {
                 type: "demo.virtual_group_item",
+                value: i,
                 key: i + 1
             }
         });
@@ -24,7 +25,7 @@ Demo.Func = BI.inherit(BI.Widget, {
                 type: "bi.label",
                 cls: "layout-bg5",
                 height: 50,
-                text: "共1000个元素，演示button_group和virtual_group每次删除第一个元素"
+                text: "共1000个元素,演示button_group和virtual_group每次删除第一个元素,打开控制台看输出"
             }, {
                 type: "bi.button_group",
                 width: 500,
diff --git a/dist/demo.js b/dist/demo.js
index 37fc9005d..7d16b4076 100644
--- a/dist/demo.js
+++ b/dist/demo.js
@@ -6875,6 +6875,7 @@ BI.shortcut("demo.list_view", Demo.Func);Demo.Func = BI.inherit(BI.Widget, {
         var items = BI.map(BI.range(1000), function (i) {
             return {
                 type: "demo.virtual_group_item",
+                value: i,
                 key: i + 1
             }
         });
@@ -6892,7 +6893,7 @@ BI.shortcut("demo.list_view", Demo.Func);Demo.Func = BI.inherit(BI.Widget, {
                 type: "bi.label",
                 cls: "layout-bg5",
                 height: 50,
-                text: "共1000个元素，演示button_group和virtual_group每次删除第一个元素"
+                text: "共1000个元素,演示button_group和virtual_group每次删除第一个元素,打开控制台看输出"
             }, {
                 type: "bi.button_group",
                 width: 500,