React结合webpack配置

发布时间：2020-12-15 06:58:06 所属栏目：百科来源：网络整理

导读：安装 node.js 安装 package.json文件（npm init -y）安装后的package.json { "name": "c_react","version": "1.0.0","description": "","main": "index.js","scripts": { "test": "echo "Error: no test specified" exit 1" },"keywords": [],"author":

安装 node.js

安装 package.json文件

（npm init -y）

安装后的package.json

{
  "name": "c_react","version": "1.0.0","description": "","main": "index.js","scripts": {
    "test": "echo "Error: no test specified" && exit 1"
  },"keywords": [],"author": "","license": "ISC","devDependencies": {
    "jspm": "^0.16.53"
 },

安装webpack (模块打包机)

npm install webpack -gd(全局安装)
npm install webpack --save-dev(局部安装)

安装babel

npm install --save-dev babel-loader babel-core//这个比较慢
或
npm install cnpm -gd
cnpm install --save-dev babel-loader babel-core//可以选择安装这个

安装转移的插件

npm install babel-preset-env  babel-preset-react --save-dev

进入webpack官网

在自己的项目目录下建：
app.js

import bar from './bar';
bar();
//
bar.js
export default function bar() {
  
}
//
webpack.config.js
    module.exports = {
  entry: './app.js',output: {
    filename: 'bundle.js'
  }
}

安装 react相关库

npm install react react-dom --save

运行webpack --watch

webpack-dev-server//提供的一个服务
npm install  webpack-dev-server -gd
npm install  webpack-dev-server --save-dev

运行 webpack-dev-server --content-base build/

自动刷新(automatic refresh)

webpack-dev-server --content-base build/  --inline

热更新 (hot replacement)

cnpm install react-hot-loader  --save-dev

webpack-dev-server --content-base build/  --hot

处理样式

cnpm install style-loader css-loader  --save-dev

优化项目结构

上面都是需要安装的命令，和配置的文件

接下来看完整的代码

webpack.config.js

var path=require("path");

module.exports = {
  devtool:'source-map',entry: './app.js',output: {
    path:path.resolve(__dirname,"build"),publicPath:"/assets/",filename:"bundle.js"
  },module: {
  rules: [
    { test: /.js$/,exclude: /node_modules/,loader: "react-hot-loader!babel-loader" },{ test: /.css$/,loader: "style-loader!css-loader" }
  ]
}
}

package.json

{
  "name": "c_react","scripts": {
    "test": "echo "Error: no test specified" && exit 1","start":"webpack-dev-server --content-base build/  --hot"
  },"devDependencies": {
    "babel-core": "^6.25.0","babel-loader": "^7.1.1","babel-preset-env": "^1.6.0","babel-preset-react": "^6.24.1","css-loader": "^0.28.4","react-hot-loader": "^1.3.1","style-loader": "^0.18.2","webpack": "^3.4.0","webpack-dev-server": "^2.6.1"
  },"dependencies": {
    "react": "^15.6.1","react-dom": "^15.6.1"
  }
}

app.js

import React from 'react';
import ReactDOM from 'react-dom'; 
import HelloWorld from './components/HelloWorld';
import './css/main.css';

ReactDOM.render(<HelloWorld/>,document.getElementById("app"));

HelloWorld.js

import React from 'react';

class HelloWorld extends React.Component{
  render(){
    return(
      <div>hello world1</div>
    );
  };

}

//export {HelloWorld as default};
export default HelloWorld;

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>react环境的搭建2</title>
</head>
<body>
    <div id="app"></div>
    <input type="text">
   <script src="assets/bundle.js">
    
   </script> 
</body>
</html>

这就是完整的一个环境

这是我的目录图

有问题加我微信呦！！！

欢迎来骚然

（编辑：李大同）

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