“ ReactJS中的组件之一”出现“必须返回有效的React元素（或null）”错误

反应成分必须只有一个根节点，因为你正在使用

TableforbasictaskList

table

commentNodes

<tbody>

Tableforbasictask

TableforbasictaskForm

table

var TableforbasictaskList = React.createClass({  render: function() {    // .....    return (<tbody>{commentNodes}</tbody>);  }});var Tableforbasictask = React.createClass({  render: function() {    return <div className="downloadlinks">      <table        className="table table-bordered table-striped-col nomargin"        id="table-data"      >        <thead>          <tr align="center"> <td>Task  Name</td> <td>Standard Discription of Task</td> <td>Employee Comment</td> <td>Employee rating</td>          </tr>        </thead>        <TableforbasictaskList data={this.props.data} />       </table>      <TableforbasictaskForm />    </div>  }});

Example