没有定义jQuery(使用Webpack)

Question

我有三个脚本:

<script type="text/javascript" src="main.min.js"></script>
<script type="text/javascript" src="script-A.js"></script>
<script type="text/javascript" src="script-B.js"></script>

main.min.js是我用Webpack创建的文件.这个文件包含了我的项目所需的所有脚本,包括我作为NPM包安装的jQuery.

script-A.js并且script-B.js是脚本,遗憾的是我不能包含在我的主Webpack文件中,因此我需要单独加载它们.这些脚本需要jQuery作为依赖项; 但即使包含jQuery main.min.js,我jQuery is not defined在调用时也会收到错误.

顺便说一句,在我的Webpack文件中,我已经有了这些代码行,这让我在通过Webpack处理的任何脚本中使用jQuery,但它似乎对其他脚本没有任何影响:

new webpack.ProvidePlugin({
    $: 'jquery',
    jQuery: 'jquery',
    "window.jQuery": 'jquery'
})

我该如何修复错误？理想情况下,我需要一个解决方案,我不需要触摸script-A.js,script-B.js因为它们属于插件.

CONSOLE SNIPPET

Uncaught ReferenceError: jQuery is not defined
    at script-A.js?ver=2.9.6:1
Uncaught ReferenceError: jQuery is not defined
    at script-B.js:617
    at script-B.js:620

PACKAJGE.JSON

{
  "name": "mysite",
  "version": "1.0.0",
  "description": "mysite",
  "main": "webpack.config.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "jquery": "^3.2.1",
    "jquery-lazy": "^1.7.5",
    "salvattore": "^1.0.9",
    "webpack": "^3.6.0"
  },
  "devDependencies": {
    "babel-core": "^6.26.0",
    "babel-loader": "^7.1.2",
    "babel-preset-es2015": "^6.24.1",
    "browser-sync": "^2.18.13",
    "browser-sync-webpack-plugin": "^1.2.0",
    "css-loader": "^0.28.7",
    "extract-text-webpack-plugin": "^3.0.1",
    "file-loader": "^1.1.5",
    "node-sass": "^4.5.3",
    "sass-loader": "^6.0.6",
    "style-loader": "^0.19.0",
    "url-loader": "^0.6.2",
    "webpack-merge": "^4.1.0"
  }
}

Answer 1

您需要使用它expose-loader以使jQuery可用于全局范围内的其他脚本.

module: {
  rules: [{
    test: require.resolve('jquery'),
    use: [{
        loader: 'expose-loader',
        options: 'jQuery'
    },{
        loader: 'expose-loader',
        options: '$'
    }]
  }]
}