Message Component - React

문제

문제 풀이

class Message extends React.Component {
  // 처음 컴포넌트를 생성할 때 state 값을 초기화해야 하기 때문에 사용.
  constructor(props) {
    super(props);
    this.state = { visible:1 }
  }
  
  handleClick = e =>{
    this.setState({visible: !this.state.visible});
  };
  
  render() {
    return this.state.visible ? (
      <React.Fragment>
          <a href="#" onClick={this.handleClick}>Want to buy a new car?</a>
      </React.Fragment>):S
    (
      <React.Fragment>
          <a href="#" onClick={this.handleClick}>Want to buy a new car?</a>
          <p>Call +11 22 33 44 now!</p>
      </React.Fragment>)
  }
}

document.body.innerHTML = "<div id='root'> </div>";
  
const rootElement = document.getElementById("root");
ReactDOM.render(<Message />, rootElement);

console.log("Before click: " + rootElement.innerHTML);
document.querySelector("a").click();
console.log("After click: " + rootElement.innerHTML);