React Base Fiddle (JSX)

Starting point for creating JSFiddles with React.

HTML

<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

Babel + JSX

class Hello extends React.Component {
  constructor(props) {
  	super(props);
  }
  
  render() {
  	var pagesArray = [];
    for (var i = 0; i < this.props.pages; i++) {
    		pagesArray.push(<li>{i}</li>);
    }
    console.log(pagesArray);
  	return(
    	 	<li>
    	 	  {pagesArray}
    	 	</li>
    );
  }
}

ReactDOM.render(
  <Hello pages={5} />,
  document.getElementById('container')
);