First React app

by Dmitry Morar

HTML

<div id="app"></div>

React

class Hello extends React.Component {
	constructor() {
  	super();
    this.state = {
    	message: 'My friend from USA'
    }
    this.updateMessage = this.updateMessage.bind(this);
  }

	updateMessage() {
  	this.setState ({
    	message: 'My friend from fixed state'
    });
  }

	render() {
    return (
      <div>
        <h1>{this.state.message}!</h1>
        <button onCLick={this.updateMessage}>Click</button>
      </div>
    )	
  }
}

ReactDOM.render(
	<Hello />,
  document.getElementById('app')
)