<link  rel="stylesheet" href="theme-graphite-all.css">
<script src="ext-all.js"></script>   
<script>Ext.onReady(function () { /*----------------------------------------------------------------------------*/

Ext.create(‘Ext.form.TextField‘, {
renderTo: Ext.getBody(),  
  　   　id:‘myTextField‘,  
});  

Ext.get(‘myTextField‘).on(‘keypress‘,function(e){
//监听键盘事件
        if(e.charCode==Ext.EventObject.SPACE){
            Ext.Msg.alert(‘info‘,‘空格‘);
        }
});

Ext.get(‘myTextField‘).on(‘click‘, function(p){  
                //处理点击事件代码  
document.title="New Title!";
});  

}); </script><!------------------------------------------------------------------------------------------------------->

<link  rel="stylesheet" href="theme-graphite-all.css">
<script src="ext-all.js"></script>   
<script>Ext.onReady(function () { /*----------------------------------------------------------------------------*/

Ext.create(‘Ext.form.TextField‘, {
        renderTo: Ext.getBody(),  

   enableKeyEvents: true,
   listeners: { keyup: function(src, evt){alert(src.getValue());} }
});  

}); </script><!------------------------------------------------------------------------------------------------------->