当在react js的父类中单击按钮时，将布尔状态值从父类传递到子类，以便我可以使用bool加载quizes。

class ParentComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      isQuizLoaded: false
    };
  }

  handleButtonClick = () => {
    this.setState({ isQuizLoaded: true });
  }

  render() {
    return (
      <div>
        <button onClick={this.handleButtonClick}>点击按钮</button>
        <ChildComponent isQuizLoaded={this.state.isQuizLoaded} />
      </div>
    );
  }
}

class ChildComponent extends React.Component {
  render() {
    if (this.props.isQuizLoaded) {
      // 加载quizes的逻辑
      return <div>quizes已加载</div>;
    } else {
      return <div>点击按钮以加载quizes</div>;
    }
  }
}