diff --git a/package/vue-beauty.js b/package/vue-beauty.js
index 967eef2..42bce28 100644
--- a/package/vue-beauty.js
+++ b/package/vue-beauty.js
@@ -2816,28 +2816,28 @@ module.exports = isLength;
 /* 120 */
 /***/ (function(module, exports) {
 
-module.exports = function(module) {
-	if(!module.webpackPolyfill) {
-		module.deprecate = function() {};
-		module.paths = [];
-		// module.parent = undefined by default
-		if(!module.children) module.children = [];
-		Object.defineProperty(module, "loaded", {
-			enumerable: true,
-			get: function() {
-				return module.l;
-			}
-		});
-		Object.defineProperty(module, "id", {
-			enumerable: true,
-			get: function() {
-				return module.i;
-			}
-		});
-		module.webpackPolyfill = 1;
-	}
-	return module;
-};
+module.exports = function(module) {
+	if(!module.webpackPolyfill) {
+		module.deprecate = function() {};
+		module.paths = [];
+		// module.parent = undefined by default
+		if(!module.children) module.children = [];
+		Object.defineProperty(module, "loaded", {
+			enumerable: true,
+			get: function() {
+				return module.l;
+			}
+		});
+		Object.defineProperty(module, "id", {
+			enumerable: true,
+			get: function() {
+				return module.i;
+			}
+		});
+		module.webpackPolyfill = 1;
+	}
+	return module;
+};
 
 
 /***/ }),
@@ -3214,8 +3214,8 @@ var iterator_default = /*#__PURE__*/__webpack_require__.n(iterator);
 
 
 // CONCATENATED MODULE: ./vb/utils/config.js
-/**
- * Created by wl on 2017/3/16.
+/**
+ * Created by wl on 2017/3/16.
  */
 
 /* harmony default export */ var utils_config = ({
@@ -4895,8 +4895,8 @@ var src_popper = __webpack_require__(236);
 var popper_default = /*#__PURE__*/__webpack_require__.n(src_popper);
 
 // CONCATENATED MODULE: ./vb/mixins/popper.js
-/**
- * https://github.com/freeze-component/vue-popper
+/**
+ * https://github.com/freeze-component/vue-popper
  * */
 
 
@@ -17208,437 +17208,437 @@ var modal_style = __webpack_require__(296);
 var modal_style_default = /*#__PURE__*/__webpack_require__.n(modal_style);
 
 // CONCATENATED MODULE: ./vb/utils/key-code.js
-/**
- * @ignore
- * some key-codes definition and utils from closure-library
- * @author yiminghe@gmail.com
+/**
+ * @ignore
+ * some key-codes definition and utils from closure-library
+ * @author yiminghe@gmail.com
  */
 
 var KeyCode = {
-  /**
-   * MAC_ENTER
+  /**
+   * MAC_ENTER
    */
   MAC_ENTER: 3,
-  /**
-   * BACKSPACE
+  /**
+   * BACKSPACE
    */
   BACKSPACE: 8,
-  /**
-   * TAB
+  /**
+   * TAB
    */
   TAB: 9,
-  /**
-   * NUMLOCK on FF/Safari Mac
+  /**
+   * NUMLOCK on FF/Safari Mac
    */
   NUM_CENTER: 12, // NUMLOCK on FF/Safari Mac
-  /**
-   * ENTER
+  /**
+   * ENTER
    */
   ENTER: 13,
-  /**
-   * SHIFT
+  /**
+   * SHIFT
    */
   SHIFT: 16,
-  /**
-   * CTRL
+  /**
+   * CTRL
    */
   CTRL: 17,
-  /**
-   * ALT
+  /**
+   * ALT
    */
   ALT: 18,
-  /**
-   * PAUSE
+  /**
+   * PAUSE
    */
   PAUSE: 19,
-  /**
-   * CAPS_LOCK
+  /**
+   * CAPS_LOCK
    */
   CAPS_LOCK: 20,
-  /**
-   * ESC
+  /**
+   * ESC
    */
   ESC: 27,
-  /**
-   * SPACE
+  /**
+   * SPACE
    */
   SPACE: 32,
-  /**
-   * PAGE_UP
+  /**
+   * PAGE_UP
    */
   PAGE_UP: 33, // also NUM_NORTH_EAST
-  /**
-   * PAGE_DOWN
+  /**
+   * PAGE_DOWN
    */
   PAGE_DOWN: 34, // also NUM_SOUTH_EAST
-  /**
-   * END
+  /**
+   * END
    */
   END: 35, // also NUM_SOUTH_WEST
-  /**
-   * HOME
+  /**
+   * HOME
    */
   HOME: 36, // also NUM_NORTH_WEST
-  /**
-   * LEFT
+  /**
+   * LEFT
    */
   LEFT: 37, // also NUM_WEST
-  /**
-   * UP
+  /**
+   * UP
    */
   UP: 38, // also NUM_NORTH
-  /**
-   * RIGHT
+  /**
+   * RIGHT
    */
   RIGHT: 39, // also NUM_EAST
-  /**
-   * DOWN
+  /**
+   * DOWN
    */
   DOWN: 40, // also NUM_SOUTH
-  /**
-   * PRINT_SCREEN
+  /**
+   * PRINT_SCREEN
    */
   PRINT_SCREEN: 44,
-  /**
-   * INSERT
+  /**
+   * INSERT
    */
   INSERT: 45, // also NUM_INSERT
-  /**
-   * DELETE
+  /**
+   * DELETE
    */
   DELETE: 46, // also NUM_DELETE
-  /**
-   * ZERO
+  /**
+   * ZERO
    */
   ZERO: 48,
-  /**
-   * ONE
+  /**
+   * ONE
    */
   ONE: 49,
-  /**
-   * TWO
+  /**
+   * TWO
    */
   TWO: 50,
-  /**
-   * THREE
+  /**
+   * THREE
    */
   THREE: 51,
-  /**
-   * FOUR
+  /**
+   * FOUR
    */
   FOUR: 52,
-  /**
-   * FIVE
+  /**
+   * FIVE
    */
   FIVE: 53,
-  /**
-   * SIX
+  /**
+   * SIX
    */
   SIX: 54,
-  /**
-   * SEVEN
+  /**
+   * SEVEN
    */
   SEVEN: 55,
-  /**
-   * EIGHT
+  /**
+   * EIGHT
    */
   EIGHT: 56,
-  /**
-   * NINE
+  /**
+   * NINE
    */
   NINE: 57,
-  /**
-   * QUESTION_MARK
+  /**
+   * QUESTION_MARK
    */
   QUESTION_MARK: 63, // needs localization
-  /**
-   * A
+  /**
+   * A
    */
   A: 65,
-  /**
-   * B
+  /**
+   * B
    */
   B: 66,
-  /**
-   * C
+  /**
+   * C
    */
   C: 67,
-  /**
-   * D
+  /**
+   * D
    */
   D: 68,
-  /**
-   * E
+  /**
+   * E
    */
   E: 69,
-  /**
-   * F
+  /**
+   * F
    */
   F: 70,
-  /**
-   * G
+  /**
+   * G
    */
   G: 71,
-  /**
-   * H
+  /**
+   * H
    */
   H: 72,
-  /**
-   * I
+  /**
+   * I
    */
   I: 73,
-  /**
-   * J
+  /**
+   * J
    */
   J: 74,
-  /**
-   * K
+  /**
+   * K
    */
   K: 75,
-  /**
-   * L
+  /**
+   * L
    */
   L: 76,
-  /**
-   * M
+  /**
+   * M
    */
   M: 77,
-  /**
-   * N
+  /**
+   * N
    */
   N: 78,
-  /**
-   * O
+  /**
+   * O
    */
   O: 79,
-  /**
-   * P
+  /**
+   * P
    */
   P: 80,
-  /**
-   * Q
+  /**
+   * Q
    */
   Q: 81,
-  /**
-   * R
+  /**
+   * R
    */
   R: 82,
-  /**
-   * S
+  /**
+   * S
    */
   S: 83,
-  /**
-   * T
+  /**
+   * T
    */
   T: 84,
-  /**
-   * U
+  /**
+   * U
    */
   U: 85,
-  /**
-   * V
+  /**
+   * V
    */
   V: 86,
-  /**
-   * W
+  /**
+   * W
    */
   W: 87,
-  /**
-   * X
+  /**
+   * X
    */
   X: 88,
-  /**
-   * Y
+  /**
+   * Y
    */
   Y: 89,
-  /**
-   * Z
+  /**
+   * Z
    */
   Z: 90,
-  /**
-   * META
+  /**
+   * META
    */
   META: 91, // WIN_KEY_LEFT
-  /**
-   * WIN_KEY_RIGHT
+  /**
+   * WIN_KEY_RIGHT
    */
   WIN_KEY_RIGHT: 92,
-  /**
-   * CONTEXT_MENU
+  /**
+   * CONTEXT_MENU
    */
   CONTEXT_MENU: 93,
-  /**
-   * NUM_ZERO
+  /**
+   * NUM_ZERO
    */
   NUM_ZERO: 96,
-  /**
-   * NUM_ONE
+  /**
+   * NUM_ONE
    */
   NUM_ONE: 97,
-  /**
-   * NUM_TWO
+  /**
+   * NUM_TWO
    */
   NUM_TWO: 98,
-  /**
-   * NUM_THREE
+  /**
+   * NUM_THREE
    */
   NUM_THREE: 99,
-  /**
-   * NUM_FOUR
+  /**
+   * NUM_FOUR
    */
   NUM_FOUR: 100,
-  /**
-   * NUM_FIVE
+  /**
+   * NUM_FIVE
    */
   NUM_FIVE: 101,
-  /**
-   * NUM_SIX
+  /**
+   * NUM_SIX
    */
   NUM_SIX: 102,
-  /**
-   * NUM_SEVEN
+  /**
+   * NUM_SEVEN
    */
   NUM_SEVEN: 103,
-  /**
-   * NUM_EIGHT
+  /**
+   * NUM_EIGHT
    */
   NUM_EIGHT: 104,
-  /**
-   * NUM_NINE
+  /**
+   * NUM_NINE
    */
   NUM_NINE: 105,
-  /**
-   * NUM_MULTIPLY
+  /**
+   * NUM_MULTIPLY
    */
   NUM_MULTIPLY: 106,
-  /**
-   * NUM_PLUS
+  /**
+   * NUM_PLUS
    */
   NUM_PLUS: 107,
-  /**
-   * NUM_MINUS
+  /**
+   * NUM_MINUS
    */
   NUM_MINUS: 109,
-  /**
-   * NUM_PERIOD
+  /**
+   * NUM_PERIOD
    */
   NUM_PERIOD: 110,
-  /**
-   * NUM_DIVISION
+  /**
+   * NUM_DIVISION
    */
   NUM_DIVISION: 111,
-  /**
-   * F1
+  /**
+   * F1
    */
   F1: 112,
-  /**
-   * F2
+  /**
+   * F2
    */
   F2: 113,
-  /**
-   * F3
+  /**
+   * F3
    */
   F3: 114,
-  /**
-   * F4
+  /**
+   * F4
    */
   F4: 115,
-  /**
-   * F5
+  /**
+   * F5
    */
   F5: 116,
-  /**
-   * F6
+  /**
+   * F6
    */
   F6: 117,
-  /**
-   * F7
+  /**
+   * F7
    */
   F7: 118,
-  /**
-   * F8
+  /**
+   * F8
    */
   F8: 119,
-  /**
-   * F9
+  /**
+   * F9
    */
   F9: 120,
-  /**
-   * F10
+  /**
+   * F10
    */
   F10: 121,
-  /**
-   * F11
+  /**
+   * F11
    */
   F11: 122,
-  /**
-   * F12
+  /**
+   * F12
    */
   F12: 123,
-  /**
-   * NUMLOCK
+  /**
+   * NUMLOCK
    */
   NUMLOCK: 144,
-  /**
-   * SEMICOLON
+  /**
+   * SEMICOLON
    */
   SEMICOLON: 186, // needs localization
-  /**
-   * DASH
+  /**
+   * DASH
    */
   DASH: 189, // needs localization
-  /**
-   * EQUALS
+  /**
+   * EQUALS
    */
   EQUALS: 187, // needs localization
-  /**
-   * COMMA
+  /**
+   * COMMA
    */
   COMMA: 188, // needs localization
-  /**
-   * PERIOD
+  /**
+   * PERIOD
    */
   PERIOD: 190, // needs localization
-  /**
-   * SLASH
+  /**
+   * SLASH
    */
   SLASH: 191, // needs localization
-  /**
-   * APOSTROPHE
+  /**
+   * APOSTROPHE
    */
   APOSTROPHE: 192, // needs localization
-  /**
-   * SINGLE_QUOTE
+  /**
+   * SINGLE_QUOTE
    */
   SINGLE_QUOTE: 222, // needs localization
-  /**
-   * OPEN_SQUARE_BRACKET
+  /**
+   * OPEN_SQUARE_BRACKET
    */
   OPEN_SQUARE_BRACKET: 219, // needs localization
-  /**
-   * BACKSLASH
+  /**
+   * BACKSLASH
    */
   BACKSLASH: 220, // needs localization
-  /**
-   * CLOSE_SQUARE_BRACKET
+  /**
+   * CLOSE_SQUARE_BRACKET
    */
   CLOSE_SQUARE_BRACKET: 221, // needs localization
-  /**
-   * WIN_KEY
+  /**
+   * WIN_KEY
    */
   WIN_KEY: 224,
-  /**
-   * MAC_FF_META
+  /**
+   * MAC_FF_META
    */
   MAC_FF_META: 224, // Firefox (Gecko) fires this for the meta key instead of 91
-  /**
-   * WIN_IME
+  /**
+   * WIN_IME
    */
   WIN_IME: 229
 };
 
-/*
- whether text and modified key is entered at the same time.
+/*
+ whether text and modified key is entered at the same time.
  */
 KeyCode.isTextModifyingKeyEvent = function (e) {
   var keyCode = e.keyCode;
@@ -17680,8 +17680,8 @@ KeyCode.isTextModifyingKeyEvent = function (e) {
   }
 };
 
-/*
- whether character is entered.
+/*
+ whether character is entered.
  */
 KeyCode.isCharacterKey = function (keyCode) {
   if (keyCode >= KeyCode.ZERO && keyCode <= KeyCode.NINE) {
@@ -25562,8 +25562,8 @@ if (false) {(function () {
 /* harmony default export */ var data_table_data_table = (data_table_Component.exports);
 
 // CONCATENATED MODULE: ./vb/components/data-table/index.js
-/**
- * Created by bailey on 17/2/20.
+/**
+ * Created by bailey on 17/2/20.
  */
 
 
@@ -29558,7 +29558,7 @@ function tree_select_select__toConsumableArray(arr) { if (Array.isArray(arr)) {
     },
     methods: {
         setPosition: function setPosition() {
-            if (!this.$el) return;
+        if (!this.$el || !this.$refs.inputArea) return;
             var p = fn_getOffset(this.$refs.inputArea, this.container);
 
             this.style = {
@@ -30367,10 +30367,10 @@ var directives_style_default = /*#__PURE__*/__webpack_require__.n(directives_sty
             }
         });
 
-        /**
-             * 获取元素的坐标位置
-             * @param el
-             * @returns {{top: number, left: number}}
+        /**
+             * 获取元素的坐标位置
+             * @param el
+             * @returns {{top: number, left: number}}
              */
         function getOffset(el) {
             var x = 0;
@@ -30384,8 +30384,8 @@ var directives_style_default = /*#__PURE__*/__webpack_require__.n(directives_sty
             return { top: y, left: x };
         }
 
-        /**
-             * 关闭方法
+        /**
+             * 关闭方法
              */
         function closeTooltip(el, binding) {
             var directClose = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
@@ -30405,8 +30405,8 @@ var directives_style_default = /*#__PURE__*/__webpack_require__.n(directives_sty
             }
         }
 
-        /**
-             * 显示方法
+        /**
+             * 显示方法
              */
         function openTooltip(el, binding) {
             if (!el) return;
@@ -30506,14 +30506,14 @@ var directives_style_default = /*#__PURE__*/__webpack_require__.n(directives_sty
             }, 0);
         }
 
-        /**
-             * 注册自定义指令tooltip
+        /**
+             * 注册自定义指令tooltip
              */
         Vue.directive('tooltip', {
-            /**
-                     * 指令第一次绑定到元素时调用
-                     * @param el
-                     * @param binding
+            /**
+                     * 指令第一次绑定到元素时调用
+                     * @param el
+                     * @param binding
                      */
             bind: function bind(el, binding) {
                 /* 准备工作 */
@@ -30544,10 +30544,10 @@ var directives_style_default = /*#__PURE__*/__webpack_require__.n(directives_sty
             },
 
 
-            /**
-                     * 被绑定元素所在的模板更新时调用
-                     * @param el
-                     * @param binding
+            /**
+                     * 被绑定元素所在的模板更新时调用
+                     * @param el
+                     * @param binding
                      */
             update: function update(el, binding) {
                 /* 这里需要实时更新tooltip的值 */
@@ -30555,10 +30555,10 @@ var directives_style_default = /*#__PURE__*/__webpack_require__.n(directives_sty
             },
 
 
-            /**
-                     * 指令与元素解绑时调用
-                     * @param el
-                     * @param binding
+            /**
+                     * 指令与元素解绑时调用
+                     * @param el
+                     * @param binding
                      */
             unbind: function unbind(el, binding) {
                 /* 清理工作: 例如，删除 bind() 添加的事件监听器 */
@@ -30860,20 +30860,20 @@ if (typeof window !== 'undefined' && window.Vue) {
     install: vb_install
 });
 
-/* function isFlexSupported(style) {
-    return 'flex' in style ||
-        'webkitFlex' in style ||
-        'MozFlex' in style;
-}
-
-if (typeof window !== 'undefined' && window.document && window.document.documentElement) {
-    const {documentElement} = window.document;
-    const NO_FLEX = 'no-flex';
-
-    if (!isFlexSupported(documentElement.style) &&
-        documentElement.className.indexOf(NO_FLEX) === -1) {
-        documentElement.className += ` ${NO_FLEX}`;
-    }
+/* function isFlexSupported(style) {
+    return 'flex' in style ||
+        'webkitFlex' in style ||
+        'MozFlex' in style;
+}
+
+if (typeof window !== 'undefined' && window.document && window.document.documentElement) {
+    const {documentElement} = window.document;
+    const NO_FLEX = 'no-flex';
+
+    if (!isFlexSupported(documentElement.style) &&
+        documentElement.className.indexOf(NO_FLEX) === -1) {
+        documentElement.className += ` ${NO_FLEX}`;
+    }
 } */
 
 /***/ }),
@@ -32257,27 +32257,27 @@ module.exports = baseIsNative;
 /* 213 */
 /***/ (function(module, exports) {
 
-var g;
-
-// This works in non-strict mode
-g = (function() {
-	return this;
-})();
-
-try {
-	// This works if eval is allowed (see CSP)
-	g = g || Function("return this")() || (1,eval)("this");
-} catch(e) {
-	// This works if the window reference is available
-	if(typeof window === "object")
-		g = window;
-}
-
-// g can still be undefined, but nothing to do about it...
-// We return undefined, instead of nothing here, so it's
-// easier to handle this case. if(!global) { ...}
-
-module.exports = g;
+var g;
+
+// This works in non-strict mode
+g = (function() {
+	return this;
+})();
+
+try {
+	// This works if eval is allowed (see CSP)
+	g = g || Function("return this")() || (1,eval)("this");
+} catch(e) {
+	// This works if the window reference is available
+	if(typeof window === "object")
+		g = window;
+}
+
+// g can still be undefined, but nothing to do about it...
+// We return undefined, instead of nothing here, so it's
+// easier to handle this case. if(!global) { ...}
+
+module.exports = g;
 
 
 /***/ }),