_reactDom2.default.render不是一个函数

Question

考虑以下反应代码

main.js文件是:

import React from 'react';
import ReactDOM from 'react-dom';
import Maincontainner from './maincontainner';

ReactDOM.render(
    <div>
        <h1>News</h1>
        <Maincontainner/>
    </div>,
    document.getElementById('content')
);

而组件是:

import React from 'react';


export default class  Maincontainner extends React.Component{

    render() {
        console.log("I am here");
        return (<dev> Salman is here </dev>);
    }
}

问题是,当我运行应用程序时,我在控制台中遇到以下错误:

Uncaught TypeError: _reactDom2.default.render is not a function

这是依赖关系

"dependencies": {
    "webpack": "^1.12.14",
    "webpack-dev-server": "^1.14.1",
    "react" : "^0.14.7",
    "react-dom" : "^0.14.7",
    "babel-cli": "^6.5.1",
    "babel-preset-es2015": "^6.5.0",
    "babel-loader": "^6.2.1",
    "babel-preset-react": "^6.3.13",
    "babelify": "^7.2.0"


  }

更新:webpack.config.json

module.exports={

    entry: './js/main.js',
    output:{

        filename: 'bundle.js'
    },
    module: {
        loaders: [
            {
                test: /.js?$/,
                loader: 'babel',
                exclude: /node_modules/,
                query: {
                    presets: ['es2015', 'react']
                }
            }
        ]
    },
    devServer:{


        port:3000
    }





};

我还有1个.babelrc文件

{
  "presets": ["es2015", "react"]
}

Answer 1

您可以更改Maincontainner组件中的某些内容.

1. 添加顶部: import ReactDOM from 'react-dom';
2. 更改render到ReactDOM.render

Answer 2

最初，我正在这样做。

import React from 'react-dom';
import ReactDom from 'react-dom';

不久，我意识到自己做错了，并更新了以下语句。

import React from 'react';
import ReactDom from 'react-dom';

希望能帮助到你。