diff --git a/bi/base.js b/bi/base.js
index 86db12a7f..02bbd5fbb 100644
--- a/bi/base.js
+++ b/bi/base.js
@@ -4006,7 +4006,7 @@ BI.Navigation = BI.inherit(BI.Widget, {
         }
     },
 
-    _assertCard: function () {
+    _assertCard: function (v) {
         if (!this.layout.isCardExisted(v)) {
             var card = this.options.cardCreator(v);
             this.cardMap[v] = card;
diff --git a/bi/core.js b/bi/core.js
index b0b8f41bd..14b93d785 100644
--- a/bi/core.js
+++ b/bi/core.js
@@ -1904,9 +1904,6 @@ if (!window.BI) {
 }
 ;
 !(function ($, undefined) {
-    _.extend(BI, {
-        version: "2.0"
-    });
     var traverse = function (func, context) {
         return function (value, key, obj) {
             return func.call(context, key, value, obj);
diff --git a/dist/base.js b/dist/base.js
index 86db12a7f..02bbd5fbb 100644
--- a/dist/base.js
+++ b/dist/base.js
@@ -4006,7 +4006,7 @@ BI.Navigation = BI.inherit(BI.Widget, {
         }
     },
 
-    _assertCard: function () {
+    _assertCard: function (v) {
         if (!this.layout.isCardExisted(v)) {
             var card = this.options.cardCreator(v);
             this.cardMap[v] = card;
diff --git a/dist/core.js b/dist/core.js
index bf97615c7..ff5a7c5c5 100644
--- a/dist/core.js
+++ b/dist/core.js
@@ -13046,9 +13046,6 @@ if (!window.BI) {
 }
 ;
 !(function ($, undefined) {
-    _.extend(BI, {
-        version: "2.0"
-    });
     var traverse = function (func, context) {
         return function (value, key, obj) {
             return func.call(context, key, value, obj);
@@ -25033,7 +25030,7 @@ _.extend(BI, {
         Top: "top",
         Bottom: "bottom"
     }
-});/**
+});BI.version = "2.0";/**
  * absolute实现的居中布局
  * @class BI.AbsoluteCenterLayout
  * @extends BI.Layout
diff --git a/src/base/combination/navigation.js b/src/base/combination/navigation.js
index 3ef882581..7f4cbf3eb 100644
--- a/src/base/combination/navigation.js
+++ b/src/base/combination/navigation.js
@@ -99,7 +99,7 @@ BI.Navigation = BI.inherit(BI.Widget, {
         }
     },
 
-    _assertCard: function () {
+    _assertCard: function (v) {
         if (!this.layout.isCardExisted(v)) {
             var card = this.options.cardCreator(v);
             this.cardMap[v] = card;
diff --git a/src/core/base.js b/src/core/base.js
index cdee5f2d5..9a39342cf 100644
--- a/src/core/base.js
+++ b/src/core/base.js
@@ -9,9 +9,6 @@ if (!window.BI) {
 }
 ;
 !(function ($, undefined) {
-    _.extend(BI, {
-        version: "2.0"
-    });
     var traverse = function (func, context) {
         return function (value, key, obj) {
             return func.call(context, key, value, obj);
diff --git a/src/core/version.js b/src/core/version.js
new file mode 100644
index 000000000..a850da743
--- /dev/null
+++ b/src/core/version.js
@@ -0,0 +1 @@
+BI.version = "2.0";
\ No newline at end of file