このExtJSグリッドのデータが表示されないのはなぜですか？

Question

私はthis example of ExtJS gridsからチェックボックスグリッドを次のコードに分離しました。

それは、ヘッダーではなく、データとグリッドを示しています

FirebugのにはJavascriptのエラーを示していません。

ダミーデータをグリッドに表示するにはどうすればよいですか？

Ext.onReady(function(){ 

    Ext.QuickTips.init(); 

    var xg = Ext.grid; 

    var reader = new Ext.data.ArrayReader({}, [ 
     {name: 'company'}, 
     {name: 'price', type: 'float'}, 
     {name: 'change', type: 'float'}, 
     {name: 'pctChange', type: 'float'}, 
     {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}, 
     {name: 'industry'}, 
     {name: 'desc'} 
    ]); 

    var sm = new xg.CheckboxSelectionModel(); 

    var grid2 = new xg.GridPanel({ 
     store: new Ext.data.Store({ 
      reader: reader, 
      data: xg.dummyData 
     }), 
     cm: new xg.ColumnModel({ 
      defaults: { 
       width: 120, 
       sortable: true 
      }, 
      columns: [ 
       sm, 
       {id:'company',header: "Company", width: 200, dataIndex: 'company'}, 
       {header: "Price", renderer: Ext.util.Format.usMoney, dataIndex: 'price'}, 
       {header: "Change", dataIndex: 'change'}, 
       {header: "% Change", dataIndex: 'pctChange'}, 
       {header: "Last Updated", width: 135, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'} 
      ] 
     }), 
     sm: sm, 
     columnLines: true, 
     width:800, 
     height:300, 
     frame:true, 
     title:'Framed with Checkbox Selection and Horizontal Scrolling', 
     iconCls:'icon-grid', 
     renderTo: document.body 
    }); 

    Ext.grid.dummyData = [ 
     ['3m Co',71.72,0.02,0.03,'9/1 12:00am', 'Manufacturing'], 
     ['Alcoa Inc',29.01,0.42,1.47,'9/1 12:00am', 'Manufacturing'], 
     ['Altria Group Inc',83.81,0.28,0.34,'9/1 12:00am', 'Manufacturing'], 
     ['American Express Company',52.55,0.01,0.02,'9/1 12:00am', 'Finance'], 
     ['American International Group, Inc.',64.13,0.31,0.49,'9/1 12:00am', 'Services'], 
     ['AT&T Inc.',31.61,-0.48,-1.54,'9/1 12:00am', 'Services'], 
     ['Boeing Co.',75.43,0.53,0.71,'9/1 12:00am', 'Manufacturing'], 
     ['Caterpillar Inc.',67.27,0.92,1.39,'9/1 12:00am', 'Services'], 
     ['Citigroup, Inc.',49.37,0.02,0.04,'9/1 12:00am', 'Finance'], 
     ['E.I. du Pont de Nemours and Company',40.48,0.51,1.28,'9/1 12:00am', 'Manufacturing'], 
     ['Exxon Mobil Corp',68.1,-0.43,-0.64,'9/1 12:00am', 'Manufacturing'], 
     ['General Electric Company',34.14,-0.08,-0.23,'9/1 12:00am', 'Manufacturing'], 
     ['General Motors Corporation',30.27,1.09,3.74,'9/1 12:00am', 'Automotive'], 
     ['Hewlett-Packard Co.',36.53,-0.03,-0.08,'9/1 12:00am', 'Computer'], 
     ['Honeywell Intl Inc',38.77,0.05,0.13,'9/1 12:00am', 'Manufacturing'], 
     ['Intel Corporation',19.88,0.31,1.58,'9/1 12:00am', 'Computer'], 
     ['International Business Machines',81.41,0.44,0.54,'9/1 12:00am', 'Computer'], 
     ['Johnson & Johnson',64.72,0.06,0.09,'9/1 12:00am', 'Medical'], 
     ['JP Morgan & Chase & Co',45.73,0.07,0.15,'9/1 12:00am', 'Finance'], 
     ['McDonald\'s Corporation',36.76,0.86,2.40,'9/1 12:00am', 'Food'], 
     ['Merck & Co., Inc.',40.96,0.41,1.01,'9/1 12:00am', 'Medical'], 
     ['Microsoft Corporation',25.84,0.14,0.54,'9/1 12:00am', 'Computer'], 
     ['Pfizer Inc',27.96,0.4,1.45,'9/1 12:00am', 'Services', 'Medical'], 
     ['The Coca-Cola Company',45.07,0.26,0.58,'9/1 12:00am', 'Food'], 
     ['The Home Depot, Inc.',34.64,0.35,1.02,'9/1 12:00am', 'Retail'], 
     ['The Procter & Gamble Company',61.91,0.01,0.02,'9/1 12:00am', 'Manufacturing'], 
     ['United Technologies Corporation',63.26,0.55,0.88,'9/1 12:00am', 'Computer'], 
     ['Verizon Communications',35.57,0.39,1.11,'9/1 12:00am', 'Services'], 
     ['Wal-Mart Stores, Inc.',45.45,0.73,1.63,'9/1 12:00am', 'Retail'], 
     ['Walt Disney Company (The) (Holding Company)',29.89,0.24,0.81,'9/1 12:00am', 'Services'] 
    ]; 

}); 

Answer 1

はそれを見つけた：Ext.grid.dummyDataブロックはちょうどExt.onReady(function(){ ブロックの外で定義する必要があります。