Your users just want a great Web experience and are tired of constantly reloading entire Web pages for simple data validation checking.

用户希望改善 Web 体验，厌倦了由于简单的数据验证检查而反复加载整个网页。

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Any response to a user action that doesn't require a trip back to the server-such as simple data validation, editing data in memory, and even some navigation-the engine handles on its own.

任何关于用户动作的响应并不都需要传回服务器——比如简单的数据验证，在内存中修改数据，甚至包括一些导航——引擎能够自己处理这些。

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