我遵循基于these项目(官方Vue Webpack模板)的this指示。
这就是我所做的:
package.js:
"scripts": {
"dev": "node build/dev-server.js",
"dev-alt": "node build/dev-server.js && set arg=alt&&webpack"
},
webpack.base.config.js:
// npm run dev-alt in the terminal
console.log('ARGS:', process.env.arg)
但ARGS:
输出undefined
。
这样做的正确方法是什么?
答案 0 :(得分:3)
使用 Webpack 5.x
及更高版本,您不能再像 --myarg=val
那样将自定义参数传递给 Webpack。但是您仍然可以传递支持的参数,例如 --mode=production
。
那么自定义 args 的解决方案是什么?相反,我们需要像这样编写它,使用新的 --env
参数。
"build-project": webpack --mode=production --env myarg=val --env otherarg=val
请注意,自定义参数在我们将 --
放在它们之前后不再以 --env
开头。您需要将 --env
放在您需要定义的每个自定义键/值对之前。
你还需要修改你的 Webpack 配置来导出一个函数,而不是一个对象。
请参阅此示例代码,taken from the docs.
const path = require('path');
module.exports = (env) => {
// Use env.<YOUR VARIABLE> here:
console.log('NODE_ENV: ', env.NODE_ENV); // 'local'
console.log('Production: ', env.production); // true
return {
entry: './src/index.js',
output: {
filename: 'bundle.js',
path: path.resolve(__dirname, 'dist'),
},
};
};
答案 1 :(得分:2)
你可以传递你想要的任何参数:
node my-script.js --myArgs thisIsTheValue
在my-script.js中,您可以通过以下方式检索参数:
function getArg(key, defaultVal) {
var index = process.argv.indexOf(key),
next = process.argv[index + 1];
defaultVal = defaultVal || null;
return (index < 0) ? defaultVal : (!next || next[0] === "-") ? true : next;
}
var theArgsIWant = getArg('--myArgs', 'this is the default if argument not found');
答案 2 :(得分:1)
从您描述的文章:
"scripts": {
"webpack-quizMaker": "set arg=quizMaker&&webpack",
"webpack-quiz": "set arg=quiz&&webpack"
}
这些sc sc正在做两件事:
webpack
。然后,在webpack配置中,他们正在读取环境变量:
if (process.env.arg == "quiz") {
// do your thing
}
if (process.env.arg == "quizMaker") {
// do your thing
};
我建议您安装cross-env
npm install --save-dev cross-env
用这个替换脚本:
"scripts": {
"webpack-quizMaker": "cross-env arg=\"quizMaker\" webpack",
"webpack-quiz": "set arg=\"quiz\" webpack"
}
不再需要&&
,因为cross-env
会在设置env变量后调用指定的命令(webpack
)。
答案 3 :(得分:1)
在yourdomain.com
中用--key=value
传递webpack参数
package.json
像这样访问"scripts": {
"build": "webpack --mode=production --browser=firefox",
}
中的argv
webpack.config.js
答案 4 :(得分:0)
您可以尝试以下方法:
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<div class="wrapper">
<h2>LOCAL TAPAS</h2>
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<li>Loading Tapas...</li>
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<input type="text" name="item" placeholder="Item Name" required>
<input type="submit" value="+ Add Item">
</form>
<div class = "buttons">
<input type="submit" class = "check__all" value="Check All">
<input type="submit" class = "uncheck__all" value="Uncheck All">
<input type="submit" class = "clear__all" value="Clear All">
</div>
</div>