在按钮单击时有条件地呈现组件(React)

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

  handleClick = () => {
    if (条件) {
      this.setState({ showComponent: true });
    }
  }

  render() {
    return (
      <div>
        <button onClick={this.handleClick}>按钮</button>
        {this.state.showComponent && <ConditionalComponent />}
      </div>
    );
  }
}

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

  handleClick = () => {
    this.setState({ showComponent: true });
  }

  render() {
    return (
      <div>
        <button onClick={this.handleClick}>按钮</button>
        {this.state.showComponent ? <ConditionalComponent /> : null}
      </div>
    );
  }
}