如何在react中消失"button“元素？

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      showButton: true
    };
  }

  handleClick = () => {
    this.setState({ showButton: false });
  }

  render() {
    return (
      <div>
        {this.state.showButton && <button onClick={this.handleClick}>Click me</button>}
      </div>
    );
  }
}

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      showButton: true
    };
  }

  handleClick = () => {
    this.setState({ showButton: false });
  }

  render() {
    return (
      <div>
        <button className={this.state.showButton ? "" : "hidden"} onClick={this.handleClick}>
          Click me
        </button>
      </div>
    );
  }
}

import React, { useState } from 'react';

function MyComponent() {
  const [showButton, setShowButton] = useState(true);

  const handleClick = () => {
    setShowButton(false);
  }

  return (
    <div>
      {showButton && <button onClick={handleClick}>Click me</button>}
    </div>
  );
}