Extjs3 Grouping grid

In last post  explained about the Array grid and how to use arrayStore and how to bind the data to grid. Now i will explain about the Extjs3 Grouping grid.

Following code having the the some static dummy data and Store grid.

Ext.onReady(function(){

    Ext.QuickTips.init();

    var xg = Ext.grid;


    // shared reader
    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 store = new Ext.data.GroupingStore({
            reader: reader,
            data: xg.dummyData,
            sortInfo:{field: 'company', direction: "ASC"},
            groupField:'industry'
        });

    var grid = new xg.GridPanel({
        store: store,
        columns: [
            {id:'company',header: "Company", width: 60, sortable: true, dataIndex: 'company'},
            {header: "Price", width: 20, sortable: true, renderer: Ext.util.Format.usMoney, dataIndex: 'price'},
            {header: "Change", width: 20, sortable: true, dataIndex: 'change', renderer: Ext.util.Format.usMoney},
            {header: "Industry", width: 20, sortable: true, dataIndex: 'industry'},
            {header: "Last Updated", width: 20, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
        ],

        view: new Ext.grid.GroupingView({
            forceFit:true,
            groupTextTpl: '{text} ({[values.rs.length]} {[values.rs.length > 1 ? "Items" : "Item"]})'
        }),

        frame:true,
        width: 700,
        height: 450,
        collapsible: true,
        animCollapse: false,
        title: 'Grouping Example',
        iconCls: 'icon-grid',
        fbar  : ['->', {
            text:'Clear Grouping',
            iconCls: 'icon-clear-group',
            handler : function(){
                store.clearGrouping();
            }
        }],
        renderTo: document.body
    });
});



// Array data for the grids
Ext.grid.dummyData = [
    ['3m Co',71.72,0.02,0.03,'4/2 12:00am', 'Manufacturing'],
    ['Alcoa Inc',29.01,0.42,1.47,'4/1 12:00am', 'Manufacturing'],
    ['Altria Group Inc',83.81,0.28,0.34,'4/3 12:00am', 'Manufacturing'],
    ['American Express Company',52.55,0.01,0.02,'4/8 12:00am', 'Finance'],
    ['American International Group, Inc.',64.13,0.31,0.49,'4/1 12:00am', 'Services'],
    ['AT&T Inc.',31.61,-0.48,-1.54,'4/8 12:00am', 'Services'],
    ['Boeing Co.',75.43,0.53,0.71,'4/8 12:00am', 'Manufacturing'],
    ['Caterpillar Inc.',67.27,0.92,1.39,'4/1 12:00am', 'Services'],
    ['Citigroup, Inc.',49.37,0.02,0.04,'4/4 12:00am', 'Finance'],
    ['E.I. du Pont de Nemours and Company',40.48,0.51,1.28,'4/1 12:00am', 'Manufacturing'],
    ['Exxon Mobil Corp',68.1,-0.43,-0.64,'4/3 12:00am', 'Manufacturing'],
    ['General Electric Company',34.14,-0.08,-0.23,'4/3 12:00am', 'Manufacturing'],
    ['General Motors Corporation',30.27,1.09,3.74,'4/3 12:00am', 'Automotive'],
    ['Hewlett-Packard Co.',36.53,-0.03,-0.08,'4/3 12:00am', 'Computer'],
    ['Honeywell Intl Inc',38.77,0.05,0.13,'4/3 12:00am', 'Manufacturing'],
    ['Intel Corporation',19.88,0.31,1.58,'4/2 12:00am', 'Computer'],
    ['International Business Machines',81.41,0.44,0.54,'4/1 12:00am', 'Computer'],
    ['Johnson & Johnson',64.72,0.06,0.09,'4/2 12:00am', 'Medical'],
    ['JP Morgan & Chase & Co',45.73,0.07,0.15,'4/2 12:00am', 'Finance'],
    ['McDonald\'s Corporation',36.76,0.86,2.40,'4/2 12:00am', 'Food'],
    ['Merck & Co., Inc.',40.96,0.41,1.01,'4/2 12:00am', 'Medical'],
    ['Microsoft Corporation',25.84,0.14,0.54,'4/2 12:00am', 'Computer'],
    ['Pfizer Inc',27.96,0.4,1.45,'4/8 12:00am', 'Services', 'Medical'],
    ['The Coca-Cola Company',45.07,0.26,0.58,'4/1 12:00am', 'Food'],
    ['The Home Depot, Inc.',34.64,0.35,1.02,'4/8 12:00am', 'Retail'],
    ['The Procter & Gamble Company',61.91,0.01,0.02,'4/1 12:00am', 'Manufacturing'],
    ['United Technologies Corporation',63.26,0.55,0.88,'4/1 12:00am', 'Computer'],
    ['Verizon Communications',35.57,0.39,1.11,'4/3 12:00am', 'Services'],
    ['Wal-Mart Stores, Inc.',45.45,0.73,1.63,'4/3 12:00am', 'Retail'],
    ['Walt Disney Company (The) (Holding Company)',29.89,0.24,0.81,'4/1 12:00am', 'Services']

];

Source from sencha