新手照着例子写的extjs的GridPanel出现的问题

Question

Ext.onReady(function(){
var cm = new Ext.grid.ColumnModel([
{header:"姓名",width:80,dataIndex:"Name",tooltip:"您的姓名"},
{header:"性别",width:40,dataIndex:"Sex",align:"center"},
{header:"生日",width:150,dataIndex:"Birthday",format:"Y-m-d"},
{header:"学历",width:80,dataIndex:"Education",align:"center"},
{id:"memo",header:"备注",dataIndex:"Memo"}
]);
var data = [
{name:"jay",sex:"男",brithday:Date.parseDate("1979-04-11","Y-m-d"),edu:"本科",memo:"无备注"},
{name:"join",sex:"女",brithday:Date.parseDate("1981-02-13","Y-m-d"),edu:"本科",memo:"菜"},
{name: "ajax",sex: "女",birthday: Date.parseDate("1980-05-12","Y-m-d"),edu: "本科",memo: "无备注"},
{name: "flex",sex: "男",birthday: Date.parseDate("1980-12-11","Y-m-d"),edu: "本科",memo: "呵呵"}
];
var proxy = new Ext.data.MemoryProxy(data);

var Human = Ext.data.Record.create(
{name:"Name",type:"string",mapping:"name"},
{name:"Sex",type:"string",mapping:"sex"},
{name:"Birthday",type:"string",mapping:"bitthday"},
{name:"Education",type:"string",mapping:"edu"},
{name: "Memo", type: "string", mapping: "memo"}
);

var reader = new Ext.data.JsonReader({},Human);

var store = new Ext.data.Store({
proxy:proxy,
reader:reader
});
store.load();

var grid = new Ext.grid.GridPanel(
{
title:"Grid",
width:600,
autoHeight:true,
cm:cm,
store:store,
renderTo:Ext.getBody(),
autoExpandColumn:"memo"
}
);



});
照着例子写的，但是数据源出不来，只是一个空的表格，求高手指教那出错了，在线等。

Answer 1

extjs引入路径正确吗？firebug下看看 报什么错。

Answer 2

用ie9的debug了下没出现报错。

Answer 3

没有人知道那错了嘛？js引入的都是正确的。debug也没出现错误，我猜是数据源没填充给grid，但是不知道到底问题出在那。。高手们来看看。

Answer 4

Ext.create('Ext.data.Store', {
    storeId:'simpsonsStore',
    fields:['name', 'email', 'phone'],
    data:{'items':[
        { 'name': 'Lisa',  "email":"[email protected]",  "phone":"555-111-1224"  },
        { 'name': 'Bart',  "email":"[email protected]",  "phone":"555-222-1234" },
        { 'name': 'Homer', "email":"[email protected]",  "phone":"555-222-1244"  },
        { 'name': 'Marge', "email":"[email protected]", "phone":"555-222-1254"  }
    ]},
    proxy: {
        type: 'memory',
        reader: {
            type: 'json',
            root: 'items'
        }
    }
});Ext.create('Ext.grid.Panel', {
    title: 'Simpsons',
    store: Ext.data.StoreManager.lookup('simpsonsStore'),
    columns: [
        { header: 'Name',  dataIndex: 'name' },
        { header: 'Email', dataIndex: 'email', flex: 1 },
        { header: 'Phone', dataIndex: 'phone' }
    ],
    height: 200,
    width: 400,
    renderTo: Ext.getBody()
});
这是帮助文档上的例子