// Store for array

     var myStore = new Ext.data.ArrayStore({

       storeId: "arrayStore",

       fields: ["ID", "Name"],

       data: [        //Data Source

           ["1", "Array"],

           ["2", "Json"],

           ["3", "Xml"]

       ]

     });

     // Grid to display the Data

     var myGrid = new Ext.grid.GridPanel({

         renderTo: Ext.getBody(),

         title: "Demo of Grid",

         style: "width:400px; margin:10px;",

         autoHeight: true,

         store: Ext.StoreMgr.lookup("arrayStore"),

         columns: {

             items:[

                 { header: "ID", dataIndex: "ID"},

                 { header: "Name", dataIndex: "Name"}

             ],

             defaults:{    // here, apply default config to each column

                 align: "center"

             }

         }

     });

//Data Source

var arrayData = [

    [1, "Array"],

    [2, "Json"],

    [3, "Xml"]

];

// fields

var arrFields = [

    { name: "ID", mapping:0, type: "int"},

    { name: "Name", mapping:1, type: "string"}

];

//Store Container

var myStore = new Ext.data.Store({

    storeId: "arrayStore",

    data: arrayData,

    fields: arrFields,

    proxy:{

        type: "memory",

        reader:{

            type: "array"

        }

    }

});

var myStore = new Ext.data.Store({

    storeId: "arrayStore",

    //autoLoad: true,

    proxy: new Ext.data.MemoryProxy(arrayData),

    reader: new Ext.data.ArrayReader({id: 0}, arrFields)

});

myStore.loadData(arrayData);