React.js创建通过数组循环

我想显示一个表的10名球员。我从通过AJAX获取数据，并把它作为道具，我的孩子。

I'm trying to display a Table of 10 Players. I get the data from via ajax and pass it as props to my Child.

var CurrentGame = React.createClass({

  // get game info
  loadGameData: function() {
    $.ajax({
      url: '/example.json',
      dataType: 'json',
      success: function(data) {
        this.setState({data: data});
      }.bind(this),
      error: function(xhr, status, err) {
        console.error('#GET Error', status, err.toString());
      }.bind(this)
    });
  },

  getInitialState: function(){
    return {data: []};
  },

  componentDidMount: function() {
    this.loadGameData();
  },

  render: function() {
    return (
      <div className="CurrentGame">
        <h1> Current Game Information</h1>
        <PlayerList data={this.state.data}/>
      </div>
    );
  }
});

现在我需要一个List组件渲染玩家：

Now I need a List Component to Render the Players:

var PlayerList = React.createClass({


  render: function() {

    // This prints the correct data
    console.log(this.props.data);

    return (
      <ul className="PlayerList">
        // I'm the Player List {this.props.data}
        // <Player author="The Mini John" />

        {
          this.props.data.participants.map(function(player) {
            return <li key={player}>{player}</li>
          })
        }
      </ul>
    )
  }
});

这给了我一个未捕获的类型错误：无法读取的特性图未定义

我有点不确定发生了什么，我的控制台日志显示正确的数据，但不知何故，我不能访问它的回报。

I'm kind of unsure what is happening, my console log displays the correct data but somehow I can't access it in the return.

我在想什么？