Exemplo - Curso ExtJs

gistfile1.txt

var TwitterReader = new Ext.data.JsonReader({
    idProperty: 'id', 
    root: 'users', 
    totalProperty: 'results',
    fields: [
        {name: 'description',       mapping: 'description'},
        {name: 'profile_image_url', mapping: 'profile_image_url'},
        {name: 'name',              mapping: 'name'},
        {name: 'screen_name',       mapping: 'screen_name'}
    ]
});
      
var TwitterProxy = new Ext.data.ScriptTagProxy({
    url: 'http://api.twitter.com/1/lusabo/organizacao-linguagil/members.json', restful: true
});
      
var store = new Ext.data.Store({ reader: TwitterReader,  proxy:  TwitterProxy });

var cm = new Ext.grid.ColumnModel({
    defaults: {
        width: 100, sortable: true
    },
    columns: [
        { header: "Descrição", width: 200, dataIndex: "description"}, 
        { header: "Nome", width: 200, dataIndex: "name"}, 
        { header: "Perfil", dataIndex: "screen_name"}
    ]
});

var grid = new Ext.grid.GridPanel({
    store: store,
    sm: new Ext.grid.RowSelectionModel({singleSelect:true}), 
    title: "Lista do Twitter", 
    width: 600, height: 200, 
    cm: cm
});

var callback = function(records) {
    console.dir(records);
    grid.render("palestrantes");
}

store.load({
  callback: callback
});