如何在react中使用onload？

import React, { Component } from 'react';

class ImageComponent extends Component {
  constructor(props) {
    super(props);
    this.state = {
      isLoaded: false
    };
  }

  handleImageLoad = () => {
    this.setState({ isLoaded: true });
  }

  render() {
    const { isLoaded } = this.state;

    return (
      <div>
        {isLoaded ? (
          <img src="image.jpg" alt="Image" />
        ) : (
          <span>Loading...</span>
        )}
      </div>
    );
  }
}

export default ImageComponent;