Extjs 入门培训软件就是服务目录1什么是 ExtJs.............................................................................................................................32ExtJs 的使用.............................................................................................................................32.1猎取 ExtJs.....................................................................................................................32.2应用 Extjs.....................................................................................................................32.3演示 HelloWorld...........................................................................................................43get,getDOM,getCmp.................................................................................................................43.1getDom 方法.................................................................................................................43.2get 方法.........................................................................................................................53.3getCmp 方法..................................................................................................................54事件........................................................................................................................................105ExtJs 所包含组件...................................................................................................................105.1ExtJS 组件分类..........................................................................................................106ExtJs 常用组件介绍...............................................................................................................126.1Panel 组件...................................................................................................................126.1.1panel 示例.........................................................................................