webpack-dev-server插件
webpack-dev-server是webpack官方提供的一个小型Express服务器。使用它可以为webpack打包生成的资源文件提供web服务。
webpack-dev-server 主要提供两个功能：
HotModuleReplacementPlugin插件
HotModuleReplacementPlugin主要用于代码热替换(具体用途还不清楚，因为没有研究通透吧)
一、webpack-dev-server插件说明
安装：
在cmd中输入npm webpack-dev-server -g执行；
启动：
在cmd中输入 webpack-dev-server执行；
额外参数配置
在webpack.config.json中增加devServer配置项
配置参数说明如下：
--content-base <file/directory/url/port>: base path for the content.--quiet: don’t output anything to the console.--no-info: suppress boring information.--colors: add some colors to the output.--no-colors: don’t use colors in the output.--compress: use gzip compression.--host <hostname/ip>: hostname or IP. 0.0.0.0 binds to all hosts.--port <number>: port.--inline: embed the webpack-dev-server runtime into the bundle.--hot: adds the HotModuleReplacementPlugin and switch the server to hot mode. Note: make sure you don’t add HotModuleReplacementPlugin twice.--hot --inline also adds the webpack/hot/dev-server entry.--public: overrides the host and port used in --inline mode for the client (useful for a VM or Docker).--lazy: no watching, compiles on request (cannot be combined with --hot).--https: serves webpack-dev-server over HTTPS Protocol. Includes a self-signed certificate that is used when serving the requests.--cert, --cacert, --key: Paths the certificate files.--open: opens the url in default browser (for webpack-dev-server versions > 2.0).--history-api-fallback: enables support for history API fallback.--client-log-level: controls the console log messages shown in the browser. Use error, warning, info or none.
HotModuleReplacementPlugin
（后续补充吧）
webpack学习笔记 (三) webpack-dev-server插件和HotModuleReplacementPlugin插件使用
原文：http://www.cnblogs.com/sunflowerGIS/p/6821792.html