调用子组件中的函数，但未在react js中设置父状态

class ParentComponent extends React.Component {
  handleClick() {
    // 处理点击事件的逻辑
  }

  render() {
    return (
      <ChildComponent handleClick={this.handleClick} />
    );
  }
}

class ChildComponent extends React.Component {
  render() {
    return (
      <button onClick={this.props.handleClick}>点击按钮</button>
    );
  }
}

class ParentComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      count: 0
    };
  }

  handleClick() {
    // 更新状态
    this.setState({ count: this.state.count + 1 });
  }

  render() {
    return (
      <div>
        <p>Count: {this.state.count}</p>
        <ChildComponent handleClick={this.handleClick} />
      </div>
    );
  }
}