问题描述
从ExtJS 3.x更新到Ext JS 4 Beta有什么风险？
您希望使用Ext JS 3.x的用户扩展将与Ext JS 4 Beta兼容吗？
它是否像用ExtJs 4替换Ext Js 3.x一样简单？
What are the risks associated with updating from ExtJS 3.x to Ext JS 4 Beta?
Would you expect that user extensions which work with Ext JS 3.x will work with Ext JS 4 Beta?
Would it be as simple as replacing Ext Js 3.x with ExtJs 4?
我应该更新或等到官方的稳定版本？
Should I update or wait until there is an official stable release?
推荐答案
Ext 4不向后兼容Ext 3。预计花费大量时间升级和测试，取决于您现有的应用程序有多大。一旦您看到对特定应用的影响，您就可以评估自己的具体风险。一切都取决于将有迁移文档，所以希望这将有助于减轻风险。
Ext 4 is not backwards-compatible to Ext 3. Expect to spend significant time upgrading and testing, depending on how large your existing application is. Once you see the impact on your specific app, you'll be able to evaluate your own specific risk. It all depends. There will be migration documentation, so hopefully that will mitigate the risk somewhat.
否，不是默认。我希望大多数需要升级，但是这又取决于具体的组件。
No, not by default. I would expect most will need to be upgraded, but again, it depends on the specific component.
否。您可能希望观看在Sencha论坛上。
No. You might want to watch this thread on the Sencha forums.
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