var shows = Ext.create('Ext.data.Store', {
fields: ['id','show'],
data: [
  {id: 0, show: 'Battlestar Galactica'},
  {id: 1, show: 'Doctor Who'},
  {id: 2, show: 'Farscape'},
  {id: 3, show: 'Firefly'},
  {id: 4, show: 'Star Trek'},
  {id: 5, show: 'Star Wars: Christmas Special'}
]
});

Ext.create('Ext.form.Panel', {
  renderTo: Ext.getBody(),
  title: 'Sci-Fi Television',
  height: 200,
  width: 500,
  items: [{
  xtype: 'tagfield',
  fieldLabel: 'Select a Show',
  multiSelect: false,
  store: shows,
  emptyText: '-Tous-',
  displayField: 'show',
  valueField: 'id',
  queryMode: 'local',
  filterPickList: true
}]
});