n17r - Map example

gistfile1.txt

<div id="root"></div>
<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>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
<script type="text/babel">
  const rootElement = document.getElementById('root');
  
  const arr = ['todo1', 'todo2']
  
  const renderItems = () => {
    return arr.map((item, index) => {
      return <div key={index} onClick={() => console.log('clicked', item)} className="container">{item}</div>;
    });
  }
  
  ReactDOM.render(renderItems(), rootElement)
</script>