Ext JS中的typeOf | JS中的typeOf

Ext JS中的typeOf：以字符串格式，返回给定变量的类型
其中对字符串对象、元素节点、文本节点、空白文本节点判断并不准确
测试代码如下：
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"

         "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

     <meta charset="UTF-8">

     <title>Ext.typeOf</title>

     <link rel="stylesheet" type="text/css" href="js/ext4/resources/css/ext-all.css">

     <link rel="stylesheet" type="text/css" href="css/icon.css">

     <!--<script type="text/javascript" src="js/ext4/bootstrap.js"></script>-->

     <script type="text/javascript" src="js/ext4/ext-all-debug.js"></script>

     <script type="text/javascript" src="js/ext4/locale/ext-lang-zh_CN.js"></script>

     <script type="text/javascript">

         Ext.onReady(_pageLoaded);

         /**

          * 页面加载完毕后执行的函数

          * @private

          */

         function _pageLoaded(){

             function _fn() {

             }

             var obj = {name:'pine',age:28};

             var arr = [1,2,3];

             var reg = /^123$/;

             var element = document.getElementById('table1');//元素节点

             var node1   = document.getElementById('node1').firstChild;//文本节点

             var node2   = document.getElementById('node2').firstChild;//空的文本节点

             console.info(" Ext.typeOf(undefined):%s",Ext.typeOf(undefined));

             console.info("*Ext.typeOf(null):%s",Ext.typeOf(null));

             console.info(" Ext.typeOf(字符串):%s",Ext.typeOf('123'));

             console.info(" Ext.typeOf(数字):%s",Ext.typeOf(123));

             console.info(" Ext.typeOf(布尔):%s",Ext.typeOf(true));

             console.info("*Ext.typeOf(字符串对象):%s",Ext.typeOf(new String('123')));

             console.info("*Ext.typeOf(数字对象):%s",Ext.typeOf(new Number(123)));

             console.info("*Ext.typeOf(布尔对象):%s",Ext.typeOf(new Boolean(true)));

             console.info("*Ext.typeOf(日期):%s",Ext.typeOf(new Date()));

             console.info(" Ext.typeOf(函数):%s",Ext.typeOf(_fn));

             console.info(" Ext.typeOf(对象)%s",Ext.typeOf(obj));

             console.info("*Ext.typeOf(数组):%s",Ext.typeOf(arr));

             console.info("*Ext.typeOf(正则):%s",Ext.typeOf(reg));

             console.info(" Ext.typeOf(dom元素):%s",Ext.typeOf(element));

             console.info(" Ext.typeOf(dom文本节点):%s",Ext.typeOf(node1));

             console.info(" Ext.typeOf(空的dom文本节点):%s",Ext.typeOf(node2));

         }

     </script>

 </head>

 <body>

 <table id="table1">

     <tr>

         <td>1</td>

         <td>2</td>

     </tr>

     <tr>

         <td>3</td>

         <td>4</td>

     </tr>

 </table>

 <span id="node1">测试文本~~~</span>

 <span id="node2">  </span>

 </body>

 </html>