Ext.define('TestResult', { 
extend: 'Ext.data.Model', 
fields: ['student', 'class', { 
name: 'mark', 
type: 'int' 
}] 
}); 
var grid = Ext.create('Ext.grid.Panel', { 
width: 400, 
height: 300, 
renderTo: document.body, 
features: [ 
Ext.create('Ext.grid.feature.Grouping', 
{ 
groupByText: '用本字段分组', 
showGroupsText: '显示分组', 
groupHeaderTpl: '班级: {name} ({rows.length})', //分组显示的模板 
startCollapsed: true //设置初始分组是不是收起 
}) 
], 
store: { 
model: 'TestResult', 
groupField: 'class', 
data: [{ 
student: 'Student 1', 
class: '1', 
mark: 84 
}, { 
student: 'Student 2', 
class: '1', 
mark: 72 
}, { 
student: 'Student 3', 
class: '2', 
mark: 96 
}, { 
student: 'Student 4', 
class: '2', 
mark: 68 
}] 
}, 
columns: [{ 
dataIndex: 'student', 
text: 'Name', 
summaryType: 'count', //进行汇总的列名 
summaryRenderer: function (value) { 
grid.getStore() 
return Ext.String.format('{0} student{1}', value, value !== 1 ? 's' : ''); 
} 
}, { 
dataIndex: 'mark', 
text: 'Mark', 
summaryType: 'average' 
}, 
{ dataIndex: 'class', 
text: 'class' 
}] 
}) 
//在不同的列下面点击 “用本字段分组”那么表格就会立即改变分组规则. 
表格的分组汇总:Ext.grid.feature.GroupSummary

代码只需要把上面的 Grouping 改成 GroupingSummary
表格插件: plugin
单元格编辑 Ext.grid.plugin.CellEditing

代码:
复制代码 代码如下:
var datas = [['gao', Date(1922, 02, 03), 2000]]; 
Ext.create('Ext.grid.Panel', { 
title: '演示', 
frame: true, 
renderTo: Ext.getBody(), 
width: 400, 
height: 300, 
store: { 
fields: ['name', 'birth', 'salary'], 
data: datas, 
proxy: { 
type: 'memory', 
data: datas, 
reader: 'array' 
}, 
autoLoad: true 
}, 
plugins: [ 
Ext.create('Ext.grid.plugin.CellEditing', { 
clicksToEdit: 1 
}) 
], 
selType: 'cellmodel', 
columns: [Ext.create('Ext.grid.RowNumberer', { text: '行号', width: 40 }), 
{ 
header: '姓名', 
width: 80, 
dataIndex: 'name', 
editor: {//定义字段 
xtype: 'textfield', 
allowBlank: false, 
} 
} 
, 
{ 
header: '生日', 
width: 100, 
dataIndex: 'birth', 
xtype: 'datecolumn', 
editor: {//定义字段 
xtype: 'datefield', 
format: 'Y-m-d', 
allowBlank: false 
} 
} 
, 
{ 
header: '工资', 
width: 100, 
dataIndex: 'salary', xtype: 'numbercolumn', 
editor: {//定义字段 
xtype: 'numberfield', 
format: '$0,000', 
allowBlank: false 
} 
} 
] 
}) 
表格 行编辑器Ext.grid.plugin.RowEditing

代码只需:把 CellEditing 改成 RowEditing
想要获取修改后的数据,ajax请求服务器,做出响应.
复制代码 代码如下:
