css分离:extract-text-webpack-plugin
- 安装该插件:
for webpack 1
npm install –save-dev [email protected]
for webpack 2
npm install –save-dev [email protected]
for webpack 3
npm install –save-dev extract-text-webpack-plugin
for webpack 4
npm i extract-text-webpack-plugin@next -D
- 在webpack-config.js中引入插件
const extractTextPlugin=require(“extract-text-webpack-plugin”); - 配置plugins:这里new一下这个对象,与上面那个配置插件用逗号分隔
new extractTextPlugin(“/css/index,.css”)
这里的/css/index.css是分离后的路径位置。这部配置完成后,包装代码:还要修改原来我们的style-loader和css-loader
- [x] 修改代码如下:
module:{ rules: [ { test: /\.css$/, use: extractTextPlugin.extract({ fallback: "style-loader", use: "css-loader" }) },{ test:/\.(png|jpg|gif)/ , use:[{ loader:'url-loader', options:{ limit:500000 } }] } ] },
- [x] 修改代码如下:
使用webpack进行打包
- 注意:虽然把css文件分离出来了,但是css路径不对
用==publishPath==来解决
- publicPath:是在webpack.config.js文件的output选项中,主要作用就是处理静态文件路径的
- 在处理前需要在webpack.config.js上方声明一个website对象
var website={ publicPath:"http://192.168.1.108:1717" }
- 注意:这里的IP和端口是本机的ip或者是你devServer配置的IP和端口 //==publicPath里面的内内容一定要写正确:用ipconfig查看电脑的ip地址,然后冒号后面跟自己设置的端口==
在output选项中引用这个对象的publicPath属性
//出口文件的配置项 output:{ //输出的路径,用了Node语法 path:path.resolve(__dirname,'dist'), //输出的文件名称 filename:'[name].js', publicPath:website.publicPath },
使用webpack进行打包,这时原来的相对路径就会变为绝对路径(绝对路径速度会更快)
gitub官网
webpack4版本以上css分离
*若出现下列错误,说明ip没写对
> y@1.0.0 server F:\webLearn\webpackLearn
> webpack-dev-server
events.js:183
throw er; // Unhandled 'error' event
^
Error: listen EADDRNOTAVAIL 10.212.109.18:8087
at Object._errnoException (util.js:992:11)
at _exceptionWithHostPort (util.js:1014:20)
at Server.setupListenHandle [as _listen2] (net.js:1338:19)
at listenInCluster (net.js:1396:12)
at doListen (net.js:1505:7)
at _combinedTickCallback (internal/process/next_tick.js:141:11)
at process._tickCallback (internal/process/next_tick.js:180:9)
at Function.Module.runMain (module.js:695:11)
at startup (bootstrap_node.js:191:16)
at bootstrap_node.js:612:3
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! y@1.0.0 server: `webpack-dev-server`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the y@1.0.0 server script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\勾丽娜\AppData\Roaming\npm-cache\_logs\2018-07-11T07_46_12_914Z-debug.log
PS F:\webLearn\webpackLearn>
修改好正确的ip地址就可以运行成功了,哈哈