超级详细使用Webpack4.X 搭建H5开发环境
很久没弄博客了，这两天有点时间来搞一下最近在弄的webpack工具
webpack是什么东西我就不介绍了，因为我使用的webpack4以上版本，这个版本有一些较大的更新，可以自己去官网上找找看就知道了。
一、准备工作
node安装，这个百度、Google一下一大把，不做介绍
二、开始
-
构建自己的目录结构，下图是我自己弄的目录结构：
1.png 创建package.json文件，或者执行npm init 来生成
我的package.json文件如下：
{
"name": "h5Base",
"version": "1.0.0",
"description": "h5Base",
"main": "index.js",
"scripts": {
"service": "http-server -p 8002",
"build": "webpack --config ./webpack.config.js --mode production --env.NODE_ENV=production",
"dev": "node webpack.dev.service"
},
"author": "mjg",
"license": "ISC",
"devDependencies": {
"babel-loader": "^7.1.4",
"birdv3": "^0.3.33",
"clean-webpack-plugin": "^0.1.19",
"copy-webpack-plugin": "^4.5.1",
"css-loader": "^0.28.11",
"extract-text-webpack-plugin": "^4.0.0-beta.0",
"file-loader": "^1.1.11",
"html-loader": "^0.5.5",
"html-webpack-plugin": "^3.2.0",
"http-server": "^0.10.0",
"mini-css-extract-plugin": "^0.2.0",
"postcss-loader": "^2.1.3",
"replace": "^0.3.0",
"style-loader": "^0.20.3",
"uglifyjs-webpack-plugin": "^1.2.4",
"url-loader": "^1.0.1",
"webpack": "^4.3.0",
"webpack-cli": "^2.0.13",
"webpack-dev-server": "^3.1.1",
"webpack-merge": "^4.1.2"
},
"dependencies": {}
}
OK，上面是我自己用到的一些库，如果有需要的朋友拷贝过去，然后执行npm install即可。
- 修改代码了
3.1 先在index.html里面随便添加点测试代码：
<!doctype html>
<html lang="">
<head>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="Cache-Control " content="no-cache,must-revalidate">
<meta name="description" content="">
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, maximum-scale=1">
<meta content="telephone=no" name="format-detection" />
<meta name="x5-orientation" content="portrait">
<title>demo title</title>
</head>
<body>
<div class="root">
<h1>我是测试</h1>
</div>
</body>
</html>
3.2 修改index.js代码：
import '../style/index.css'
console.log('====================================');
console.log(1);
console.log('====================================');
3.3 修改index.css代码:
.root {
background: red;
width: 200px;
height: 200px;
margin: 0 auto;
}
- 代码处理完了，准备需要调试了，但是我们调试的话就需要启动服务，接下来我们就需要配置webpack的服务了
4.1 创建webpack.config.js
const webpack = require('webpack');
const path = require('path');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const srcDir = path.join(__dirname, './src');
const distDir = path.join(__dirname, './dist');
module.exports = {
entry: {
index: [
'webpack/hot/dev-server',
'webpack-dev-server/client?http://localhost:80',
"./src/js/index.js"
]
},
output: {
path: path.resolve(__dirname, 'dist'),
// 给js css 图片等在html引入中添加前缀
publicPath: "../../",
filename: 'js/[name].min.js',
},
devtool: 'source-map',
module: {
rules: [
{
test: /\.html$/,
use: [
{
loader: "html-loader",
options: { minimize: true }
}
]
},
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: "babel-loader"
}
},
{
test: /\.css$/,
exclude: /node_modules/,
use: ExtractTextPlugin.extract({
fallback: "style-loader",
use: {
loader: 'css-loader'
},
})
},
{
test: /\.(gif|jpg|png|woff|svg|eot|ttf)\??.*$/,
loader: 'url-loader?limit=8192&name=img/[name].[ext]'
}
]
},
plugins: [
new CleanWebpackPlugin(['dist']),
new ExtractTextPlugin('style/[name].min.css'),
new HtmlWebpackPlugin({
hash: true,
chunks: ['index'],
template: "./src/pages/index/index.html",
filename: "pages/index/index.html"
}),
new webpack.HotModuleReplacementPlugin(),
]
};
4.2 创建webpack.dev.service.js
var WebpackDevServer = require("webpack-dev-server");
var webpack = require("webpack");
var webpackConfig = require('./webpack.config.js');
var compiler = webpack(webpackConfig);
var server = new WebpackDevServer(compiler, {
hot: true,
historyApiFallback: true,
// It suppress error shown in console, so it has to be set to false.
quiet: false,
// It suppress everything except error, so it has to be set to false as well
// to see success build.
noInfo: false,
stats: {
// Config for minimal console.log mess.
assets: false,
colors: true,
version: false,
hash: false,
timings: false,
chunks: false,
chunkModules: false
},
// contentBase不要直接指向pages，因为会导致css、js支援加载不到
contentBase: __dirname + '/src/',
}).listen(80, '0.0.0.0', function (err) {
if (err) {
console.log(err);
}
});
- 启动服务配置好了，在看看packag.json里面启动服务的命令：
"dev": "node webpack.dev.service"
那么在命令终端中输入： sudo npm run dev
ps：为什么加sudo?因为使用了80端口，所以加sudo，如果不使用80端口就不用加sudo
在浏览器中输入：http://localhost/pages/index/index.html就可以看到效果了
如果想打包正式上线，执行命令： npm run build就行，注意把webpack.config.js里面的一些sourceMap、entry里面的热更新去掉，当然自己重新搞一个线上的webpack.pro.config.js也可以，把一些开发调试功能去掉就行了
OK，以上就是我看到webpack4有更新后，随便搞得一个H5与webpack结合开发的工具，有问题欢迎随时提出！下一章讲说一下怎么使用webpack执行本地接口proxy，解决本地开发接口调试跨域问题
附上github地址：https://github.com/majianguang/h5Base
下一章，如何接入webpack的proxy跨域代理，以及允许绑定本地host调试的：https://www.jianshu.com/p/b3e0cc3863e6