// simple array store var store = new Ext.data.SimpleStore({ fields: ['numero'], data : numeros // from states.js }); var combo = new Ext.form.ComboBox({ store: store, displayField:'numero', valueField: 'numero', editable:false, typeAhead: true, mode: 'local', triggerAction: 'all', selectOnFocus:true, lazyRender:true, listClass: 'x-combo-list-small' // applyTo: 'local-states' });