How to upgrade extjs 3.4 project in 5

Question

我想在5中升级extjs 3.4项目我将遵循的步骤。我有一个视图端口，它有多个项目，项目有网格，来自等等。

Answer 1

You cannot upgrade an extjs 3.4 project to extjs 5 by just changing the files. ExtJS 3.4 is quiet old and the APIs are different. The 3.4 version don't even have concepts of MVC application and many of the advanced features. So, no matter how big or small your application is .. it is better to do a rewrite of your application using the MVC methodologies to make the application more maintainable and better equipped for the future.