Hello World in React

hello-world-in-react.markdown

Hello World in React

A Pen by Dan Abramov on CodePen.

License.

index.html

<div id="root">
    <!-- This element's contents will be replaced with your component. -->
</div>

script.babel

class Clock extends React.Component {
  constructor(props) {
    super(props);
    this.state = {date: new Date()};
  }

  render() {
    return (
      <div>
        <h1>Hello, world!</h1>
        <h2>It is {this.state.date.toLocaleTimeString()}.</h2>
      </div>
    );
  }
}

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

scripts

<script src="https://unpkg.com/react/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom/umd/react-dom.development.js"></script>

Trying learn some React js staffs