One, the parent component obtains the variables and methods of the child component
1. Define a ref when calling subcomponents
<rchild ref="myChild"></rchild>
2. Pass in the parent component
this.$refs.myChild.属性
this.$refs.myChild.方法()
Second, the child component gets the variables and methods of the parent component
Write directly in the subcomponent:
this.$parent.属性
this.$parent.方法()
——————— 但是 ————————
The way the child component obtains the parent component's variables is not powerful enough and can be used daily. Knowing props is what you have to do (required for enterprises)