当作用域嵌套在React中时，如何避免在ES6: const that = this中创建'this‘的引用

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = { /* ... */ };
  }

  handleClick = () => {
    // 这里的this指向MyComponent实例
    console.log(this.state);
  }

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

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = { /* ... */ };
    this.handleClick = this.handleClick.bind(this);
  }

  handleClick() {
    // 这里的this指向MyComponent实例
    console.log(this.state);
  }

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