TypeError: react__WEBPACK_IMPORTED_MODULE_0___default.a.createClass is not a function

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我是靠谱客的博主甜美芹菜，这篇文章主要介绍TypeError: react__WEBPACK_IMPORTED_MODULE_0___default.a.createClass is not a function，现在分享给大家，希望可以做个参考。

1、错误描述

2、错误原因

复制代码

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import React, {Component} from 'react';
import {render} from 'react-dom';
import Button from 'react-bootstrap/Button';

var TickTock = React.createClass({
    mixins: [SetIntervalMixin], 
    getInitialState: function() {
        return {seconds: 0};
    },
    componentDidMount: function() {
        this.setInterval(this.tick, 2000); 
    },
    tick: function() {
        this.setState({seconds: this.state.seconds + 1});
    },
    render: function() {
        return (
            <label>
                {this.state.seconds} seconds.
            </label>
        );
    }
});