# 六.resolve 属性的配置
# 1.安装
package.json
{
"name": "6.resolve",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"dev": "webpack-dev-server --open --mode development"
},
"keywords": [],
"author": "",
"license": "ISC",
"devDependencies": {
"@babel/core": "^7.4.0",
"@babel/preset-env": "^7.4.2",
"babel-loader": "^8.0.5",
"css-loader": "^2.1.1",
"html-webpack-plugin": "^3.2.0",
"style-loader": "^0.23.1",
"webpack": "^4.29.6",
"webpack-cli": "^3.3.0",
"webpack-dev-server": "^3.2.1"
},
"dependencies": {
"bootstrap": "^4.3.1"
}
}
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# 2.文件
# 2.1src/index.js
import "bootstrap"
import "./style"
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# 2.2 src/style.css
body {
background: green;
}
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# 2.3 index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>webpac-resolve</title>
</head>
<body>
<button class="btn btn-danger">按钮</button>
</body>
</html>
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# 3.配置
webpack.config.js
const path = require("path")
let HtmlWebpackPlugin = require("html-webpack-plugin")
module.exports = {
mode: "development",
entry: {
home: "./src/index.js",
},
resolve: {
modules: [path.resolve("node_modules")],
extensions: [".js", ".css", ".json", ".vue"],
mainFields: ["style", "main"],
// mainFiles: ["index.js"],
// alias: {
// bootstrap: "bootstrap/dist/css/bootstrap.css"
// }
},
module: {
rules: [
{
test: /\.css$/,
use: ["style-loader", "css-loader"],
},
{
test: /\.js$/,
use: {
loader: "babel-loader",
options: {
presets: ["@babel/preset-env"],
},
},
},
],
},
output: {
filename: "[name].js",
path: path.resolve(__dirname, "dist"),
},
plugins: [
new HtmlWebpackPlugin({
template: "./index.html",
filename: "index.html",
}),
],
}
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# 4.运行
npm run dev
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页面按钮和背景都变颜色