react native function

const component = () => {
console.log("This is a functional Component");
}

export default class Archive extends React.Component { 

    saySomething(something) {
        console.log(something);
    }

    handleClick(e) {
        this.saySomething("element clicked");
    }

    componentDidMount() {
        this.saySomething("component did mount");
    }

    render() {
        return <button onClick={this.handleClick.bind(this)} value="Click me" />;
    }
}

function Welcome(props) {  return <h1>Hello, {props.name}</h1>;
}

const element = <Welcome name="Sara" />;ReactDOM.render(
  element,
  document.getElementById('root')
);

class Foo extends Component {
  handleClick() {
    console.log('Click happened');
  }
  render() {
    return <button onClick={this.handleClick.bind(this)}>Click Me</button>;
  }
}

function MyApp() {
  return (
    <div>
      <ul>
        <li>Name </li>
        <li>Place </li>
        <li>Animal </li>
      </ul>
    </div>
  )
}

ReactDOM.render(
  <MyApp />,
  document.getElementById('root')
);