当用户在react中的文本字段中执行某些操作时，如何触发某些函数？

<input type="text" onChange={handleInputChange} />

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

  handleInputChange = (event) => {
    this.setState({ inputValue: event.target.value });
  }

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

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

  handleButtonClick = () => {
    const value = this.inputRef.current.value;
    // 执行相应的函数
  }

  render() {
    return (
      <div>
        <input type="text" ref={this.inputRef} />
        <button onClick={this.handleButtonClick}>触发函数</button>
      </div>
    );
  }
}