sass的安装及使用

打开命令行

npm install node-sass --save-dev  //安装node-sass
npm install sass-loader --save-dev  //安装sass-loader
npm install style-loader --save-dev  //安装style-loader 有些人安装的是 vue-style-loader 其实是一样的！

　　连续安装三个麻烦的话，来个快捷的方式

npm install sass-loader node-sass vue-style-loader --D

//卸载sass
npm uninstall --save-dev sass-loader
npm uninstall --save-dev node-sass

　　打开build文件夹下面的webpack.base.config.js,如下修改

module: {
    rules: [
      ...(config.dev.useEslint ? [createLintingRule()] : []),
      {
        test: /\.vue$/,
        loader: 'vue-loader',
        options: vueLoaderConfig
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        include: [resolve('src'), resolve('test'), resolve('node_modules/webpack-dev-server/client')]
      },
      {
        test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
        loader: 'url-loader',
        options: {
          limit: 10000,
          name: utils.assetsPath('img/[name].[hash:7].[ext]')
        }
      },
      {
        test: /\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/,
        loader: 'url-loader',
        options: {
          limit: 10000,
          name: utils.assetsPath('media/[name].[hash:7].[ext]')
        }
      },
      {
        test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
        loader: 'url-loader',
        options: {
          limit: 10000,
          name: utils.assetsPath('fonts/[name].[hash:7].[ext]')
        }
      },
      { //上面的不修改，这是sass的配置
        test: /\.scss$/,
        loaders: ['style', 'css', 'sass']
      }
    ]
  },

　　在 .vue 的编程页面上，style上加 lang='scss'

       在引入sass文件是sass文件后缀为 .scss