如何在react中更改我的非输入标签？

constructor(props) {
  super(props);
  this.state = {
    labelContent: '初始内容'
  };
}

render() {
  return (
    <div>
      <label>{this.state.labelContent}</label>
      <button onClick={this.changeLabelContent}>更改内容</button>
    </div>
  );
}

changeLabelContent = () => {
  this.setState({ labelContent: '新的内容' });
}