reactjs - react-redux connect 提供未定义的道具

Question

我正在使用 react-redux 进行状态管理并使用传递状态存储，provider但我不知道为什么它在我的提供程序组件的消费者部分中以未定义的形式出现

  render(){
    return (
        <Provider store = {store} >
            <ApolloProvider client = {client} >
                  <div className="row">
                        <SideBar />
                        <Center />
                        <RightSlidePanel />
                  </div>
          </ApolloProvider>
        </Provider>
    )
  }
}

RightSLidePanel 组件

import { connect} from  'react-redux'
 class RightSlidePanel extends React.Component{
  constructor(){
    super();
    console.log("inside connect " + this.props);
  }
//render method here

}
const mapStateToProps = state => {
  return {
      loggedInUser : state.loggedInUser
    }

}
const mapDepatchToProps = dispatch =>{
  return {
    changeIsReduxWorking : answerTrueOrNot =>{
            dispatch({
              type : "CHANGE_REDUX_WORKING_STATUS",
              data : answerTrueOrNot
            });
    }
  }
}
export default connect(
  mapStateToProps,
  mapDepatchToProps
)(RightSlidePanel);

console.log 的结果是undefined.

Answer 1

您没有将道具传递给超级，因为props那里未定义。

constructor( props ){
    super( props );
    console.log("inside connect " + this.props);
  }