网上看到的一个事例，其中包含了组件的定义拷贝下来供大家参考：

Ext.onReady(function(){
var dtCategory=[
['all','所有种类'],
['1','Beverages'],
['2','Condiments'],
['3','Confections'],
['4','Dairy Products'],
['5','Grains/Cereals'],
['6','Meat/Poultry '],
['7','Produce'],
['8','Seafood']
];
var stCategory=new Ext.data.SimpleStore({
fields:['value','text'],
data:dtCategory
});
var cbCategory=new Ext.form.ComboBox({
id:"cbCategory",
store:stCategory,
displayField:"text",
valueField:"value",
typeAhead:true,
mode:"local",
triggerAction:"all",
emptyText:"请选择商品种类...",
editable:false,
allowBlank:false,
blankText:"商品种类必须选择",
autoSelect:true,
selectOnFoucus:true,
value:'',
dfval:''
});
cbCategory.setValue("all");
var tfName=new Ext.form.TextField({
id:'tfName'
});
var btnSearch=new Ext.Button({
id:'btnSearch',
iconCls:'btn_search',
text:'搜索',
handler:function(){
stProduct.load({params:{start:0,limit:10,categoryName:Ext.getCmp("cbCategory").getValue(),productName:Ext.getCmp("tfName").getValue()}});
}
});
var btnHelp=new Ext.Button({
text:'帮助',
iconCls:'btn_help'
})
var tb=new Ext.Toolbar({
id:'tb',
items:[
'商品种类：',
cbCategory,
'-',
'商品名称：',
tfName,
btnSearch,
'->',
btnHelp
]
});
var pnNorth=new Ext.Panel({
id:'pnNorth',
region:'north',
autoHeight:true,
items:[
tb
]
});
var url="Default.aspx";
var stProduct=new Ext.data.Store({
id:"st",
proxy:new Ext.data.HttpProxy({url:url}),
reader:new Ext.data.JsonReader({totalProperty:"totalProperty",root:"root",fields:[{name:"roductID"},{name:"roductName"},{name:"CategoryName"},{name:'UnitPrice'},{name:'Discontinued'},{name:'QuantityPerUnit'},{name:'CompanyName'}] })//ProductID作为隐藏列，不显示在gridpanel中
});
stProduct.load({params:{start:0,limit:10,categoryName:Ext.getCmp("cbCategory").getValue(),productName:Ext.getCmp("tfName").getValue()}});
var cmProduct=new Ext.grid.ColumnModel([
new Ext.grid.RowNumberer(),
{header:"产品名称",dataIndex:"roductName",sortable:true},
{header:"产品种类",dataIndex:"CategoryName",sortable:true},
{header:"单价",dataIndex:"UnitPrice",sortable:true},
{header:"是否停产",dataIndex:"Discontinued",sortable:true},
{header:"规格",dataIndex:"QuantityPerUnit",sortable:true},
{header:"供货商",dataIndex:"CompanyName",sortable:true}
]);
var pgtbProduct=new Ext.PagingToolbar({
id:"pgtbProduct",
displayInfo:true,
emptyMsg:"没有数据要显示！",
displayMsg:"当前为第{0}--{1}条，共{2}条数据",
store:stProduct,
pageSize:10
});
var grdProduct=new Ext.grid.GridPanel({
id:"grdProduct",
title:"商品信息",
cm:cmProduct,
store:stProduct,
autoWidth:true,
selModel:new Ext.grid.RowSelectionModel({single:true}),
height: screen.availHeight-190,
frame: true,
pageSize:20,
bbar:pgtbProduct,
//autoExpandColumn:6,
loadMask:true,
viewConfig:{
forceFit:true
}
});
var stSupplier = new Ext.data.Store({
id: "stSupplier",
autoLoad:true,
proxy: new Ext.data.HttpProxy({ url: "roductInfo.aspx?type=getSupplierInfo" }),
reader: new Ext.data.JsonReader({ totalProperty: "totalProperty", root: "root", fields: [{ name: "sID" }, { name: "cName"}] })
});
var pnProduct=new Ext.Panel({
id:'pnProduct',
title:'商品信息',
autoHeight:true,
items:[
new Ext.Panel({
id:'pnProductRowOne',
border:false,
bodyStyle:'padding-top:10px;',
layout:'column',
items:[
new Ext.Panel({
columnWidth:.5,
border:false,
layout:'form',
labelWidth:60,
labelAlign:'right',
items:[
{
xtype:'textfield',
id:'ProductName',
name:'ProductName',
fieldLabel:'商品名称',
anchor:'95%'
}
]
}),
new Ext.Panel({
columnWidth:.25,
border:false,
layout:'form',
labelWidth:60,
labelAlign:'right',
items:[
{
xtype:'radio',
id:'DiscontinuedOneID',
//hiddenName:'Discontinued',
name:'Discontinued',
inputValue:'1',
fieldLabel:'是否停售',
boxLabel:'是',
anchor:'95%'
}
]
}),
new Ext.Panel({
columnWidth:.25,
border:false,
layout:'form',
labelWidth:60,
labelAlign:'right',
items:[
{
xtype:'radio',
id:'DiscontinuedTwoID',
//hiddenName:'Discontinued',
name:'Discontinued',
checked:true,
inputValue:'0',
boxLabel:'否',
anchor:'95%'
}
]
})
]
}),
new Ext.Panel({
id:'pnProductRowTwo',
border:false,
layout:'column',
items:[
new Ext.Panel({
columnWidth:.5,
border:false,
layout:'form',
labelWidth:60,
labelAlign:'right',
items:[
{
xtype:'textfield',
id:'QuantityPerUnit',
name:'QuantityPerUnit',
fieldLabel:'规格',
anchor:'95%'
}
]
}),
new Ext.Panel({
columnWidth:.5,
border:false,
layout:'form',
labelWidth:60,
labelAlign:'right',
items:[
{
xtype:'textfield',
id:'UnitPrice',
name:'UnitPrice',
fieldLabel:'单价',
anchor:'95%'
}
]
})
]
}),
new Ext.Panel({
id:'pnProductRowThree',
border:false,
layout:'column',
items:[
new Ext.Panel({
columnWidth:.5,
border:false,
layout:'form',
labelWidth:60,
labelAlign:'right',
items:[
{
xtype:'textfield',
id:'UnitsInStock',
name:'UnitsInStock',
fieldLabel:'库存量',
anchor:'95%'
}
]
})
,
new Ext.Panel({
columnWidth:.5,
border:false,
layout:'form',
labelWidth:60,
labelAlign:'right',
items:[
{
xtype:'combo',
id:'CommpanyName',
//name:'CommpanyName',
hiddenName:'SupplierID',
fieldLabel:'供货商',
displayField: 'cName',
valueField: 'sID',
mode: 'local',
typeAhead: true,
triggerAction: "all",
editable: false,
allowBlank: false,
autoSelect: true,
selectOnFoucus: true,
store: stSupplier,
anchor:'95%'
}
]
})
]
})
]
});
var pnCategory=new Ext.Panel({
id:'pnCategory',
title:'商品相关种类信息',
autoHeight:true,
items:[
new Ext.Panel({
id:'pnCategoryRowOne',
border:false,
bodyStyle:'padding-top:10px;',
layout:'column',
items:[
new Ext.Panel({
columnWidth:.5,
border:false,
layout:'form',
labelWidth:60,
labelAlign:'right',
items:[
{
xtype:'textfield',
id:'CategoryName',
name:'CategoryName',
fieldLabel:'商品种类',
anchor:'95%'
},
{
xtype:'textfield',
id:'Description',
name:'Description',
fieldLabel:'商品描述',
anchor:'95%'
},
{
xtype:'hidden',
id:'CategoryID',
name:'CategoryID',
fieldLabel:'种类编号'//这个是隐藏的
}
]
}),
new Ext.Panel({
columnWidth:.5,
border:false,
bodyStyle:'padding-left:25px;',
layout:'form',
labelWidth:60,
labelAlign:'right',
items:[
{
xtype:'box',//
id:'CategoryImage',
width:172,
height:120,
autoEl:{
tag:'image',
src:'tempFile/1.png'
}
}
]
})
]
})
]
});
var tpProduct=new Ext.TabPanel({//很多时候我们可能是一个表单放在不同的tab中，为了方便提交和加载数据可以在tabpanel最外层放一个formpanel，但是显示就有问题，这个时候可以通过设置tabpanel高度和deferredRender、layoutOnTabChange两个属性来调整
id:'tpProduct',
deferredRender:false,//是否第一次显示就渲染所有tab（默认为true）
layoutOnTabChange:true,
//height:300,
//autoTabs:true,
activeTab:0,
border:false,
items:[
pnProduct,
pnCategory
]
});
var fpProduct=new Ext.FormPanel({//作为TabPanel的容器
id:'fpProduct',
reader: new Ext.data.JsonReader({
successProperty: 'success',//后台返回的json中成功与否的字段名称
root: 'info'//后台返回的json中，数据字段名称
},
[
'ProductName',
//'Discontinued',
'QuantityPerUnit',
'UnitPrice',
'UnitsInStock',
'CategoryID',
'CategoryName',
'Description',
'SupplierID'
]
),
items:[
tpProduct
]
});
var winProductInfo=new Ext.Window({
title:'商品信息',
width:450,
height:300,
layout:'fit',
closeAction:'hide',
plain:true,//true则主体背景透明，false则和主体背景有些差别
collapsible:true,//是否可收缩
modal:true,//是否为模式窗体
items:[
fpProduct
],
buttons:[//窗体按钮
{
text:'提交',
handler:function(){
if(fpProduct.getForm().isValid()){
var record=grdProduct.getSelectionModel().getSelected();
fpProduct.getForm().submit({
method:'post',
url:'ProductInfo.aspx?type=updateProductInfo&productId='+record.get("roductID"),
waitMsg:'数据更新中...',
success:function(){
stProduct.reload();
Ext.Msg.alert("系统提示","提交成功！");
},
failure:function(){
Ext.Msg.alert("系统提示","提交失败！");
}
});
}
}
},
{
text:'关闭',
handler:function(){//点击时触发的事件
winProductInfo.hide();
}
}
]
});
// Ext.getCmp('tp').on("tabchange",function(tabPanel,tab){
// Ext.Msg.alert("系统提示","Tab标题："+tab.title);
// });
grdProduct.on("rowdblclick",function(grid,rowIndex,e){
var row=grid.getStore().getAt(rowIndex).data;
//Ext.Msg.alert("系统提示","行："+rowIndex+" 产品ID："+row.ProductID);
fpProduct.form.load({//利用load自动填充，注意表单控件字段一定要和json中一致
url:'ProductInfo.aspx?type=getProductInfo&productId='+row.ProductID,
waitMsg:'数据加载中...',
success:function(){
//alert("tempFile/"+row.CategoryName+".png");
if(row.Discontinued=="是"){
Ext.getCmp('DiscontinuedOneID').setValue(true);
}else{
Ext.getCmp('DiscontinuedTwoID').setValue(true);
}
Ext.getCmp('CategoryImage').getEl().dom.src="tempFile/"+row.CategoryName+".png";
},
failure:function(){
Ext.Msg.alert("系统提示","数据加载失败！");
}
});
winProductInfo.show();
});
var pnCenter=new Ext.Panel({
id:'pnCenter',
region:'center',
items:[
grdProduct
]
});
var vp=new Ext.Viewport({
id:'vp',
layout:'border',
renderTo:Ext.getBody(),
items:[
pnNorth,
pnCenter
]
});
});

来源：互联网
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