fix

assets/support/support.js

@@ -7,6 +7,12 @@ __PluginManager__.register('support', function(module, exports, require, global)
             return str[0].toUpperCase() + str.slice(1);
         }
     };
+    var arr = {
+        isKey: function (key) {
+            var n = Number(key);
+            return isInteger(n) && (''+n === ''+key);
+        }
+    };
     function uniqueId (length = 32, firstLetter = true) {
         var idStr = '';
         if(length < 1) return idStr;
@@ -39,14 +45,35 @@ __PluginManager__.register('support', function(module, exports, require, global)
             val === 0 ||
             val === false;
     }
+    function typeOf(value) {
+        return typeof value;
+    }
+    function isObject(value) {
+        return typeOf(value)  === 'object' ? value !== null : typeof value === 'function';
+    }
+    function isNumber(value) {
+        return !Number.isNaN(value) && isFinite(value) && typeof value === 'number';
+    }
+    function isInteger(value) {
+        return isNumber(value) && (value % 1) === 0;
+    }
+    function isFloat(value) {
+        return isNumber(value);
+    }
     /**
      * @memberOf kit
      */
     var support = {
         str: str,
+        arr: arr,
         uniqueId,
         valueEx,
-        empty
+        empty,
+        isNumber,
+        typeOf,
+        isObject,
+        isInteger,
+        isFloat,
     };
 
     return module.exports = support;