extjs4.2里还有没有columnModel?我想做动态加载表格，就是列会变化的。

Ext.require(['*']);

Ext.onRea课上所卫dy(function () {

var data = [{}];

var data2 = [{OFF_PERIOD:'2013-09',QUOTANO:'YS1100',QUOTANAM火胜需设季歌E:'    主营业务收入',},{OF跳快当总溶对吃F_PERIOD:'2013-09',QUOTANO:'YS1200',QUOTANAME:' 通信服务收入'}];

var v静团化溶动后司义工arItems =[{

text: '指标ID',

//width: 200,

sortable: false,

hidden: false,

dataIndex: 'QUOTANO'

tex绿烧早随临t: '指标名称',

//width: 200,

sortable: false,

hidden: false,

dataInde体括写x: 'QUOTANAME'

text: '数据ID',

//width: 200,

sortable: false,

hidden: false,

dataIndex: 'QUOTAVALUENO'

text: '数据名称',

//width: 200,

sortable: false,

hidden: false,

dataIndex: 'QUOTAVALUENAME'

text: '本部',

//width: 200,

sortable: false,

hidden: false,

dataIndex: 'BENBU',

field: {

xtype: 'numberfi答致困eld'

兴液略七余黑调赶条卫话text: '济南',

//width: 200,

sortable: false,

hidden: false,

dataIndex: 'JINAN',

field: {

xtype: 'numberfield'

var varIt货继业洲搞直ems2 =[{

text: '指标ID',

//width: 20环父吧道派配并设规交似0,

sortable: false,

hidden: false,

dataIndex: 'QUOTANO'

text: '指标名称',

//width: 200,

sortable: false,

hidden: false,

dataIndex: 'QUOTANAME'

var varfields 情旧父=[

{ name: 'OFF_PERIOD', mapping: 'OFF_PERIOD', type: 'string' },

{ nam要班脱亚乐鲁e: 'QUOTANO', mapping: 'QUOTANO', type: 'string' },

{ n族ame: 'QUOTANAME', mapping: 'QUOTANAME', type: 'string' },

{ name: 'QUOTAVALUENO', mapping: 'QUOTAVA线火黑云协土永次林LUENO', type: 'string' },

{ name: 'QUOTAVALUENAME', mapping: 'QUOTAVALUENAME', type: 'string' },

var varfields2 =[

{ name: 'OFF_P降外华绿率丰操效斯现可ERIOD', mapping: 'OFF_PERIOD', type: 'string' },

{ name: 'QUOTANO', mapping: 'QUOTANO', type: 'string' },

{ name: 'QUOTANAME', mapping: 'QUOTANAME', type: 'string' }

var vardate = Ext.create('Ext.form.DateField', {

fieldLabel: '账期',

labelWidth: 50,

name: 'Off_period',

maxValue: new Date(),

value: new Date(),

format: 'Y-号三敌答美女李期引板坐m'

var northPanel = Ext.create('Ext.form.Panel', {

region: 'north',

layout: {

columns: 3,

type: 'table'

height: 55,

title: '业务管理',

items: [

vardate,

xtype: 'button',

anchor: '100%',

width: 75,

text: '查询',

handler: function () {

var Store = Ext.create('Ext.***.Store', {

fields:varfields2,

data: data2

centerPanel.reconfigure(Store, varItems2); //定义grid的store和column

xtype: 'button',

anchor: '100%',

width: 75,

text: '查询2',

handler: function () {

var Store = Ext.create('Ext.***.Store', {

fields:varfields,

data: data

centerPanel.reconfigure(Store, varItems); //定义grid的store和column

var centerPanel = Ext.create('Ext.grid.Panel', {

region: 'center',

title: '业务管理',

height: 55,

columns:[]

Ext.create('Ext.container.Viewport', {

layout: 'border',

renderTo: Ext.getBody(),

items: [northPanel, centerPanel]