原文地址:

1.在定义组件配置的时候设置

xtype : 'textarea',
name : 'dataSetField',
labelSeparator:'',
fieldLabel:'',
hideLabel: true,
allowBlank: true,
height: mainPanelHeight*0.8,
anchor:'99%',
listeners:{       'blur':function(){
   alert(1);
}}

2.对组件变量通过on设置

gridPanel.on('rowdblclick',function(gridPanel,_rowIndex,e){
  alert(2);
}

3.通过组件变量方法addListener（）设置

               gridPanel.addListener('rowclick',function(){             alert(3)}            );
gridPanel.addListener('rowclick',function(){
 alert(3)}
);