16-Vue父子组件通信出现的问题

Cannot find element: #myA

原因:把id=“MyA”加在了template下面的div里面了，应该加在template标签上。

Property or method "name" is not defined on the instance but referenced during render. Make sure to declare reactive data properties in the data option.

原因：data()在return时定义的不是name

Uncaught TypeError: (intermediate value) is not a constructor

原因：多加了个其他变量符号

Property or method "name" is not defined on the instance but referenced during render. Make sure to declare reactive data properties in the data option.

原因：没有在data()中return name的值