如何在react的模式中传递道具

<ChildComponent propName={propValue} />

// 父组件
import React from 'react';
import ChildComponent from './ChildComponent';

class ParentComponent extends React.Component {
  render() {
    const propValue = 'Hello, World!';
    return (
      <div>
        <ChildComponent propName={propValue} />
      </div>
    );
  }
}

// 子组件
import React from 'react';

class ChildComponent extends React.Component {
  render() {
    return (
      <div>
        <p>{this.props.propName}</p>
      </div>
    );
  }
}

export default ChildComponent;