first of all, there is a baseClass
class BaseDialog extends React.Component {
constructor(props) {
this.state[this.state.preProp] = "ValueA"; // this.state["KeyA"] = "ValueA"
}
}
class InstanceDialog extends BaseDialog {
constructor(props){
super(props)
this.state.preProp = "KeyA";
}
}because BaseDialog is parent, you can"t get preProp,. Is there any way for BaseDialog to get the preProp value in instance
?in design pattern, this is a reverse dependency, which violates the design principle, and the parent component should not rely on the state of the child component. If you really need a child component to pass a value to the parent component, you can pass
no way (impossible)
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