Take some time to explore the demos above and look at the extension source code to get an appreciation for how complex an ext JS extension or plug-in can be.
花一点时间来研究以上演示、看看扩展源代码，获取对扩展和插件的复杂程度的一个正确了解。
With the basics learned in this article, you should now be ready to start learning about more complex concepts in Ext JS extension and plug-in development.
在本文中学习了这些基础理论之后，您就可以开始学习一些更复杂的 Ext JS 扩展和插件开发的概念了。
You can steer clear of this permission-granting business by installing the provider .jar file in the "ext" directory as a bundled extension.
您可以通过在 "ext" 目录下作为一组扩展安装提供程序的 .jar 文件，更清楚地控制这种许可授权事务。
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