webpack 开发服务器：收到 "Hot Module Replacement enabled" 但我的页面没有改变

Question

我正在尝试使用 webpack-dev-server 来运行一个简单的网页。我可以在 http://localhost:8080/ 中看到我的页面，但无论我做什么设置都无法正确地运行热重载，当我单击 ctrl s 时，我的 console.log 会立即显示如下内容：

[WDS] Live Reloading enabled.

我的命令显示：

｢wdm｣: Compiled successfully. ｢wdm｣: Compiling...

但是在这些之后，我的页面仍然没有变化。我需要运行 npm run build 看看我的代码是如何工作的。

我的项目结构是这样的：

folder
-index.html
-package.json
-webpack.config.js
-src
---router
-----router.js
---views
-----header.vue
-----footer.vue
-----cat1.vue

这是我的代码。

<!-- index.html  -->
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>Vue.js v2</title>
</head>

<body>
  <div id="app">
    <isheader></isheader>
    <router-view></router-view>
    <isfooter></isfooter>
  </div>
  <script src="http://localhost:8080/webpack-dev-server.js"></script>
</body> 
</html>

package.json

{
  "name": "webpack0409",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "build": "webpack",
    "serve": "webpack-dev-server --devtool eval --progress --colors --hot",
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "babel-core": "^6.26.3",
    "babel-loader": "^8.1.0",
    "babel-plugin-transform-runtime": "^6.23.0",
    "babel-preset-es2015": "^6.24.1",
    "css-loader": "^3.5.1",
    "file-loader": "^6.0.0",
    "style-loader": "^1.1.3",
    "url-loader": "^4.1.0",
    "vue": "^2.6.11",
    "vue-loader": "^15.9.1",
    "vue-router": "^3.1.6",
    "vue-template-compiler": "^2.6.11",
    "webpack": "^4.42.1"
  },
  "devDependencies": {
    "html-webpack-plugin": "^4.0.4",
    "webpack-cli": "^3.3.11",
    "webpack-dev-server": "^3.10.3"
  }
}

webpack.config.js

const VueLoaderPlugin = require('vue-loader/lib/plugin')
const htmlWebpackPlugin = require('html-webpack-plugin');  
const webpack = require('webpack');

var path = require('path')
var config = {
  mode: "development",
  entry: [
    'webpack/hot/dev-server',
    path.join(__dirname, 'src/router', 'router')
  ],
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bundle.js',
    publicPath: './'
  },
  devServer: {
    contentBase: path.resolve(__dirname, 'dist'),
    hot: true,
    historyApiFallback: true
  },
  module: {
    rules: [
      { test: /\.jsx$/, loader: 'babel-loader', exclude: /node_modules/ },
      { test: /\.vue$/, loader: 'vue-loader' },
      { test: /\.css$/, loader: ["style-loader", "css-loader"] },
      {
        test: /\.(jpe?g|png|gif|woff|woff2|eot|ttf|svg)(\?[a-z0-9=.]+)?$/,
        loader: 'file-loader',
        options: { name: 'image/[name].[ext]' }
      },
    ],
  },
  resolve: {
    extensions: ['.js', '.vue'],
    alias: {
      vue: 'vue/dist/vue.js',
      node_modules: __dirname + '/node_modules'
    }
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new VueLoaderPlugin(),
    new htmlWebpackPlugin({ 
      template: './index.html' 
    }),
  ]
}
module.exports = config

header

<template>
<div>
    <div style="background: #44bb55;">
        <router-link to="/">Home</router-link>
        <p>header</p> 
    </div>
</div>
</template>

header、footer、cat1，这3个文件的代码很相似，只是css风格不同。 router-link 可以正常工作，只是热重载不行。

我做的有什么问题吗？提前致谢。

Answer 1

感谢阅读。我发现有人有类似的问题：

以为我不太了解它是如何工作的，我在 webpack.config.js

中删除了 publicPath

现在看起来像这样：

  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bundle.js'
  },

现在我的页面可以正常刷新了。

webpack 开发服务器：收到 "Hot Module Replacement enabled" 但我的页面没有改变

webpack dev server: received "Hot Module Replacement enabled" but my page does not change

webpack

webpack-dev-server