React-Hot-Loader入门

问题描述：

我正在尝试在React中使用React Hot Loader.我通过运行"npm install --save-dev react-hot-loader"安装了React Hot loader.我尝试遵循 http://gaearon.github.io/react-hot- loader/getstarted/，但无法理解.我将附上我的webpack.config.js和package.json.我进行了文档中列出的更改.但是我看不到我在运行中对组件所做的更改.怎么了?

I am trying to use React Hot Loader in React. I installed react hot loader by running "npm install --save-dev react-hot-loader". I tried to follow the http://gaearon.github.io/react-hot-loader/getstarted/ but couldn't understand. I am attaching my webpack.config.js and package.json. I made changes as listed in document. But I am not able to see the changes I make in components on the fly. What is wrong?

webpack.config.js

    var path = require('path');
var webpack = require('webpack');

module.exports = {
    devServer: {
        inline: true,
        contentBase: './src',
        port: 3000
    },
    devtool: 'cheap-module-eval-source-map',
    entry: [
        'webpack-dev-server/client?http://0.0.0.0:3000', // WebpackDevServer host and port
        'webpack/hot/only-dev-server', // "only" prevents reload on syntax errors
        './dev/js/index.js' // Your appʼs entry point
    ],
    module: {
        loaders: [
            {
                test: /\.js$/,
                loaders: ['react-hot','babel'],
                exclude: /node_modules/
            },
            {
                test: /\.scss/,
                loader: 'style-loader!css-loader!sass-loader'
            }
        ]
    },
    output: {
        path: 'src',
        filename: 'js/bundle.min.js'
    },
    plugins: [
        new webpack.optimize.OccurrenceOrderPlugin(),
        new webpack.HotModuleReplacementPlugin()
    ]
};

package.json中的脚本

scripts from package.json

 "scripts": {
    "dev": "webpack",
    "start": "webpack-dev-server"
  }

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>React Webpack</title>
</head>
<body>

    <div id="root"></div>
    <script src="js/bundle.min.js"></script>

</body>
</html>

答

好吧，现在您需要在捆绑之前，将热加载脚本添加到html文件中，如下所示:

Ok, now you need to add the hot loading script to your html file, right before bundle like so:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>React Webpack</title>
</head>
<body>

    <div id="root"></div>

    <script src="http://localhost:3000/webpack-dev-server.js"></script>
    <script src="js/bundle.min.js"></script>
</body>
</html>

它在localhost:3000下，因为我在您的webpack配置中看到了它.我通常将其保留在:8080下，但我认为根据您的配置，它必须像这样.

It's under localhost:3000 because I see that in your webpack config. I usually just leave it under :8080, but I think it needs to be like this based on your config.

React-Hot-Loader入门

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