But including user interface logic in a use case is generally considered bad form.

但是在用例中包括用户接口逻辑通常被认为是不好的形式。

youdao

It was primarily devised as a strategy for separating user interface logic from business logic.

最初它主要是作为一种分离用户接口逻辑与业务逻辑的策略被设计出来的。

youdao

For example, we might add user interface logic that we want to keep separate from our model, or we might add some classes for performance reasons.

例如，我们可能会添加想与模型分离开来的用户接口逻辑，或者我们可能会出于性能方面的原因而添加某些类。

youdao

Simply put, the model is the data (and by extension the HTML content of a website or app), the view is what you see on the screen (defined by the CSS styles of the user interface) and the controller is the logic that ties the two together (often expressed as the JavaScript or other interactive programming).

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