I am playing around with the ReactJS framework on JSBin.

I have noticed that if my component name starts with a lowercase letter it does not work.

For instance the following does not render:

var fml = React.createClass({

  render: function () {

    return <a href='google.com'>Go</a>

  }

});



React.render(<fml />, document.body);

But as soon as I replace the fml with Fml it does render.

Is there a reason I cannot begin tags with small letters?