Ext是js界面编程的一个封装包，它包含了大部分的UI组件。今天就来应用Ext.grid.GridPanel组件创建个简单的表格。  大致步骤分成以下几步： 1、创建表格数据源，可以是外部读入的数据，也可以是数组定义的。 var  myData=[  ['Apple',29.89,0.24,0.81,'9/1 12:00am'],  ['Ext',83.81,0.28,0.34,'9/12 12:00am'],  ['Google',71.72,0.02,0.03,'10/1 12:00am'],  ['Microsoft',52.55,0.01,0.02,'7/4 12:00am'],  ['Yahoo!',29.01,0.42,1.47,'5/22 12:00am'] ];   再用Ext.data.ArrayReader创建列格式  var myReader = 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'} ]); 2、创建表格体 var grid = new Ext.grid.GridPanel({  store: new Ext.data.Store({   data: myData,   reader: myReader  }),  columns: [     //是把列格式与列形成映射   {header: "Company", width: 120, sortable: true, dataIndex: 'company'},   {header: "Price", width: 90, sortable: true, dataIndex: 'price'},   {header: "Change", width: 90, sortable: true, dataIndex: 'change'},   {header: "% Change", width: 90, sortable: true, dataIndex: 'pctChange'},   {header: "Last Updated", width: 120, sortable: true,     renderer: Ext.util.Format.dateRenderer('m/d/Y'),                          dataIndex: 'lastChange'}  ],  viewConfig: {   forceFit: true  },  renderTo: 'content',  title: 'My First Grid',  width: 500,  height:500,  frame: true }); 3、在html文件中加入 <div id='content'></div>.当然要用Ext.onReady()装载代码。    

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