React.createClass is not a function

Question

index.js:4 Uncaught TypeError: React.createClass is not a function    at Object.<anonymous> (index.js:4)    at __webpack_require__ (bootstrap 76b8bc0f513264952518:19)    at Object.<anonymous> (bundle.js:1183)    at __webpack_require__ (bootstrap 76b8bc0f513264952518:19)    at module.exports (bootstrap 76b8bc0f513264952518:62)    at bootstrap 76b8bc0f513264952518:62var React = require('react');var ReactDOM = require('react-dom');var CommentBox = React.createClass({  render: function() {    return (      <div>        Hello, world! I am a CommentBox.      </div>    );  }});ReactDOM.render(  <CommentBox />,  document.getElementById('example'));

Answer 1

教程会给你整个代码,拿到它的 package.json 文件,这里面有教程里使用的react版本,替换自己的,然后 npm 安装就好了.再看看新的react组件创建方式.

Answer 2

这个方法在react16里面被移除了，麻烦去找个新一点的教程，现在都是extends Component的形式，createClass太老太老了