Understanding of MVVM and MVC

MVVM It means Model-View-ViewModel

Model： The model layer , Responsible for handling business logic and interacting with the server .
View： View layer , Responsible for transforming the data model into UI Show it , It can be simply understood as HTML page .
ViewModel： Attempt to model layer , Used to connect Model and View , yes Model and View The bridge between . whenever V When the layer obtains or saves data , All by VM The layer is processed in the middle , So as to give it to M layer .

MVC  namely  Model-View-Controller  Abbreviation , Namely Model — View — controller , That is to say a standard Web The application consists of these three parts ：

View ： To present data in a certain way to the user

Model： It's just data

Controller ： Receive and process requests from users , And will Model Return to the user