Use ref in vue to let the parent component call the child component

This article mainly introduces how vue uses ref to let the parent component call the child component. Friends who need it can refer to it

The three buttons on the parent component can

call the child component The three methods of component loading perform different operations

     
  
  显示 隐藏 变色 
   

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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