下载插件

less 下载 less包和less-loader

sass 下载node-sass和sass-loader

使用插件

webpack.config.js

 module: {                  //css打包规则
        rules: [{
            test: /\.css$/,        //把项目中所有以.css结尾的文件打包,插入到html里
            use: ["style-loader","css-loader"]  //css兼容loader，单独的css文件
        }, {
            test: /\.less$/,
            use: ["style-loader","css-loader","less-loader"]   //从右到左,内联样式
        },{
            test: /\.scss$/,
            use: ["style-loader","css-loader","sass-loader"]
        }]
    },

目录结构

lessstyle.less

@width:200px;
@height:200px;
@color:red;

body {
  margin: 0;
  padding: 0;
}
p {
  color: @color;
  font-size: 25px;
}
h1 {
  color: blue;
  font-size: 88px;
}
.box2 {
  width: @width;
  height: @height;
  background-color: @color;
}

sassstyle.scss

$w:50px;
$h:100px;
.box3 {
  width: $w;
  height: $h * 3;
  background-color: greenyellow;
  color: bisque;
}

index.html

Title

	商城首页~~~~~~



	打包css



	this is a box1



	this is a box2



	this is a box3

index.js

require("../css/style.css")
require("../css/lessstyle.less")
require("../css/sassstyle.scss")
console.log("首页专用js文件");

执行webpack

html页面