This is a webpack plugin, that adds custom attributes (i.e. onload) to the JS / CSS asset tags generated by html-webpack-plugin.
This plugin only handles statically loaded assets, rather than lazy loaded assets (i.e. via import('file') syntax).
Supports webpack v4 + html-webpack-plugin v4, or webpack v5 + html-webpack-plugin v5.
This package has built-in TypesScript support.
npm i @chipzhang/webpack-asset-attributes-pluginNote this will not install webpack or html-webpack-plugin automatically.
A key-value object representing the custom attributes to add to the JS asset tags. Values can be string or boolean, and will be automatically escaped. For example:
{onload: 'console.log("JS Asset loaded", this)', defer: true}
A key-value object representing the custom attributes to add to the CSS asset tags. Values can be string or boolean, and will be automatically escaped. For example:
{onload: 'console.log("CSS Asset loaded", this)', disabled: true}
const HTMLPlugin = require('html-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const {AssetAttributesPlugin} = require('@chipzhang/webpack-asset-attributes-plugin')
const assetAttributesPlugin = new AssetAttributesPlugin({
scriptAttribs: {onload: 'console.log("JS Asset loaded", this)', defer: true},
styleAttribs: {onload: 'console.log("CSS Asset loaded", this)', disabled: true},
})
module.exports = {
/* your webpack configs */
plugins: [new HTMLPlugin(), new MiniCssExtractPlugin(), assetAttributesPlugin],
module: {
rules: [
/* loaders for other file extensions */
{
test: /\.css$/i,
use: [MiniCssExtractPlugin.loader, 'css-loader'],
},
],
},
}In your webpack config file, first add plugin html-webpack-plugin, to generate the HTML file.
Then configure this plugin (@chipzhang/webpack-asset-attributes-plugin), to add custom attributes to the JS / CSS asset tags.
You may need mini-css-extract-plugin to generate separate CSS files instead of inlining styles in JS files.
For the above example, the generated HTML may look like:
<html>
<head>
<!-- other head tags -->
<script defer src="example.js" onload='console.log("JS Asset loaded", this)'></script>
<link href="example.css" rel="stylesheet" onload='console.log("CSS Asset loaded", this)' disabled />
</head>
<body>
<!-- body tags -->
</body>
</html>GNU AFFERO GENERAL PUBLIC LICENSE Version 3