jQuery 未定义(使用 Webpack) [英] jQuery is not defined (using Webpack)
问题描述
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.该文件包含我的项目所需的所有脚本,包括我作为 NPM 包安装的 jQuery.
main.min.js
is a file I create with Webpack. This file includes all the scripts I need for my project, including jQuery, which I have installed as a NPM package.
script-A.js
和 script-B.js
是不幸的我不能包含在我的主 Webpack 文件中的脚本,所以我需要单独加载它们.这些脚本需要 jQuery 作为依赖;但即使 jQuery 包含在 main.min.js
中,我在调用它们时也会收到 jQuery is not defined
错误.
script-A.js
and script-B.js
are scripts that unfortunately I can't include in my main Webpack file, so I need to load them separately. These scripts need jQuery as a dependency; but even though jQuery is included in main.min.js
, I get a jQuery is not defined
error when they are invoked.
顺便说一下,在我的 Webpack 文件中,我已经有了这些代码行,这让我可以在通过 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:
By the way, in my Webpack file I already have these lines of code, which let me use jQuery in any script I handle through Webpack, but it doesn't seem to have any effect on the other scripts:
new webpack.ProvidePlugin({
$: 'jquery',
jQuery: 'jquery',
"window.jQuery": 'jquery'
})
我该如何修复错误?理想情况下,我需要一个解决方案,我不必接触 script-A.js
和 script-B.js
因为它们属于插件.
How can I fix the error? Ideally, I need a solution where I don't have to touch script-A.js
and script-B.js
since they belong to a plugin.
控制台代码片段
Uncaught ReferenceError: jQuery is not defined
at script-A.js?ver=2.9.6:1
Uncaught ReferenceError: jQuery is not defined
at script-B.js:617
at script-B.js:620
PACKAJGE.JSON
{
"name": "mysite",
"version": "1.0.0",
"description": "mysite",
"main": "webpack.config.js",
"scripts": {
"test": "echo "Error: no test specified" && exit 1"
},
"author": "",
"license": "ISC",
"dependencies": {
"jquery": "^3.2.1",
"jquery-lazy": "^1.7.5",
"salvattore": "^1.0.9",
"webpack": "^3.6.0"
},
"devDependencies": {
"babel-core": "^6.26.0",
"babel-loader": "^7.1.2",
"babel-preset-es2015": "^6.24.1",
"browser-sync": "^2.18.13",
"browser-sync-webpack-plugin": "^1.2.0",
"css-loader": "^0.28.7",
"extract-text-webpack-plugin": "^3.0.1",
"file-loader": "^1.1.5",
"node-sass": "^4.5.3",
"sass-loader": "^6.0.6",
"style-loader": "^0.19.0",
"url-loader": "^0.6.2",
"webpack-merge": "^4.1.0"
}
}
推荐答案
你需要利用 expose-loader
以使 jQuery 可用于全局范围内的其他脚本.
You need to make use of the expose-loader
in order to make jQuery available to the other scripts on the global scope.
module: {
rules: [{
test: require.resolve('jquery'),
use: [{
loader: 'expose-loader',
options: 'jQuery'
},{
loader: 'expose-loader',
options: '$'
}]
}]
}
这篇关于jQuery 未定义(使用 Webpack)的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!