webpack4:基本使用

webpack是基于Node构建,所以wepack支持所有Node API和语法。

即:Chrome浏览器能支持的ECMAScript语法(排除DOM、BOM),wbpack都能支持。Chrome不支持ES6,所以webpack也不支持。

创建基本的webpack4.x项目:

webpack4:基本使用

创建后的目录:

webpack4:基本使用

其中:

package.json:

{
  "name": "wp4-1",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "webpack": "^4.41.5",
    "webpack-cli": "^3.3.10"
  }
}

webpack.config.js:

module.exports = {
    mode: ‘production‘ // development 或 production
}

index.js:

console.log("hello webpack4.0!");

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>Document</title>
    <script src="../dist/main.js"></script>
</head>
<body>
    
</body>
</html>

cmd中运行“webpack”命令打包。

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