大神给解答一下吧~ - 编程论坛

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.

<html xmlns="http://www.
<head>
    <script src="js/jquery-1.8.0.js" type="text/javascript"></script>
    <script src="js/jquery-1.8.0-vsdoc.js" type="text/javascript"></script>

    <script src="adapter/ext/ext-base.js" type="text/javascript"></script>
    <link href="resources/css/ext-all.css" rel="stylesheet" type="text/css" />
    <script src="ext-all.js" type="text/javascript"></script>

    <script type ="text/javascript"  language=javascript>
    Ext.onReady(function () {

    var sm=new Ext.grid.CheckboxSelectionModel();
    var cm = new Ext.grid.ColumnModel([
    sm,

     //定义表格
    {header: '学号', dataIndex: 'id', width: 60, sortable: true },
    {header:'姓名', dataIndex: 'name', width: 120},
    {header:'性别',dataIndex:'sex',width:60},
    {header:'年龄',dataIndex:'age',width:60},
    {header:'班级',dataIndex:'class',width:60}

    ]);


    var data=[
      ['1001','韩迪','M','20','软1'],
      ['1002','李平','F','19','软2'],
      ['1003','杨那','F','20','软1'],
      ['1004','郑超','M','21','软2'],
      ['1005','吴静','F','20','软1'],
    ];//二维数组

    var store = new Ext.data.Store({
        proxy: new Ext.data.MemoryProxy(data),
        reader: new Ext.data.ArrayReader({}, [
        { name: 'id'},
        { name: 'name'},
        { name: 'sex'},
        { name: 'age'},
        { name: 'class'}

        ])

        var grid = new Ext.grid.GridPanel({
            renderTo: 'grid',
            store: store,
            autoHeight: true,
             sm:sm,
            cm: cm,
            bbar:new Ext.PagingToolbar({
              pageSiza:10,
              store:store,
              displayInfo:true,
              displayMsg:'显示{0}条记录到第{1}条记录，共{2}条记录',
              emptyMsg:'无记录'

            })


       });
         store.load();//初始化数据
   });

   </script>
</head>
<body>
<div id ='grid'></div>
</body>
</html>

什么都显示不出来，为什么呢......