title: How to auto select (show) the first value of combobox in Ext Js?
body: <p>This is my combobox</p>
  
  <pre><code>{
      xtype: 'combo', 
      fieldLabel: LANG.LOGIN_LANG,
      id : 'lang', 
      store: [
          ['tr','Türkçe'],
          ['ru','Русский'],
          ['en','English']
      ],
      mode: 'local',
      triggerAction: 'all',
      selectOnFocus:true
  },
  </code></pre>