var data = [
  {author: "Pete Hunt",text: "This is one comment"},{author: "Jordan Walke",text: "This is *another* comment"}
];
//读取父组件的数据
//在这儿this.props.author读取了传进来的author数据
//而“This this one comment”等数据则被this.props.children读取了
//另外使用的时候，要渲染的一定要放在ReactDOM.render之前。
//上下尊卑有序。
var Comment = React.createClass({
  render: function () {
    return (
      <div className="comment">
        <h2 className="commentAuthor">
          {this.props.author}
        </h2>
        {this.props.children}
        <hr/>
      </div>
    )
  }
});
//CommentBox
//data={this.props.data}，这句话的意思是
var CommentBox = React.createClass({
  render: function () {
    return (
      <div className="commentBox">
        <h1>Comments</h1>
        <CommentList data={this.props.data}/>
        <CommentForm/>
      </div>
    );
  }
});
//CommentList
//这里map的意思是一个遍历函数
//把json数据传进去，并且命名为comment
//然后return，Comment author = {comment.author},{comment.text}
//然后commentNodes是一个数组，React会对其自动解包
//
var CommentList = React.createClass({
  render:function() {
    var commentNodes = this.props.data.map(function (comment) {
      return (
        <Comment author = {comment.author}>
          {comment.text}
        </Comment>
      )
    })
    return (
      <div className="commentList">
        {commentNodes}
      </div>
    )
  }
});
//CommentForm
var CommentForm = React.createClass({
  render: function () {
    return (
      <div className="commentForm">
        Hello I'm a commentForm. </div> ) } }); //React的render ReactDOM.render( <CommentBox data={data}/>,document.getElementById('content') );