Edit in JSFiddle

  <body>
    <div id="content">

    </div>
    <script type="text/babel">
    
// tutorial8.js
var data = [
  {id: 1, author: "Pete Hunt", text: "This is one comment"},
  {id: 2, author: "Jordan Walke", text: "This is *another* comment"}
];    
    
      // tutorial1.js
var CommentBox = React.createClass({
  render: function() {
    return (
      <div className="commentBox">
        Hello, world! I am a CommentBox.
							<h1>Comments</h1>
        <CommentList data={this.props.data} />
        <CommentForm />
      </div>
    );
  }
});

// tutorial10.js
var CommentList = React.createClass({
  render: function() {
    var commentNodes = this.props.data.map(function(comment) {
      return (
        <Comment author={comment.author} key={comment.id}>
          {comment.text}
        </Comment>
      );
    });
    return (
      <div className="commentList">
        {commentNodes}
      </div>
    );
  }
});

var CommentForm = React.createClass({
  render: function() {
    return (
      <div className="commentForm">
        Hello, world! I am a CommentForm.
      </div>
    );
  }
});

// tutorial4.js
var Comment = React.createClass({
  render: function() {
    return (
      <div className="comment">
        <h2 className="commentAuthor">
          {this.props.author}
        </h2>
        {this.props.children}
      </div>
    );
  }
});



ReactDOM.render(
  <CommentBox data={data}/>,
  document.getElementById('content')
);
    </script>
  </body>