单击submit后，如何清除react中的输入字段？

class MyForm extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      inputValue: ''
    };
  }

  handleChange(event) {
    this.setState({ inputValue: event.target.value });
  }

  handleSubmit(event) {
    event.preventDefault();
    // 处理表单提交逻辑
    this.setState({ inputValue: '' }); // 清除输入字段
  }

  render() {
    return (
      <form onSubmit={this.handleSubmit.bind(this)}>
        <input
          type="text"
          value={this.state.inputValue}
          onChange={this.handleChange.bind(this)}
        />
        <button type="submit">提交</button>
      </form>
    );
  }
}

class MyForm extends React.Component {
  constructor(props) {
    super(props);
    this.inputRef = React.createRef();
  }

  handleSubmit(event) {
    event.preventDefault();
    // 处理表单提交逻辑
    this.inputRef.current.value = ''; // 清除输入字段
  }

  render() {
    return (
      <form onSubmit={this.handleSubmit.bind(this)}>
        <input type="text" ref={this.inputRef} />
        <button type="submit">提交</button>
      </form>
    );
  }
}

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

  handleSubmit(event) {
    event.preventDefault();
    // 处理表单提交逻辑
    this.setState(prevState => ({ resetKey: prevState.resetKey + 1 })); // 清除输入字段
  }

  render() {
    return (
      <form onSubmit={this.handleSubmit.bind(this)}>
        <ResettableInput key={this.state.resetKey} />
        <button type="submit">提交</button>
      </form>
    );
  }
}

class ResettableInput extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      inputValue: ''
    };
  }

  handleChange(event) {
    this.setState({ inputValue: event.target.value });
  }

  render() {
    return (
      <input
        type="text"
        value={this.state.inputValue}
        onChange={this.handleChange.bind(this)}
      />
    );
  }
}