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第60题：谈谈你对MVVM模式的理解？ #60

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noxussj opened this issue Jun 18, 2020 · 0 comments

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noxussj commented Jun 18, 2020

什么是MVVM？

MVVM分为Model、View、ViewModel三者

Model：代表数据模型，数据和业务逻辑都在Model层中定义
View：代表UI视图，负责数据的展示
ViewModel：负责监听Model中数据的改变并且控制视图的更新

总结：MVVM模式简化了界面与业务的依赖，解决了数据频繁更新。MVVM 在使用当中，利用双向绑定技术，使得 Model 变化时，ViewModel 会自动更新，而 ViewModel 变化时，View 也会自动变化

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