Currently delving into NextJS, I've reached the stage of incorporating metadata. Upon completing the tasks outlined in that lesson, upon inspecting the front-end source code, I came across
<noscript id="__next_css__DO_NOT_USE__"></noscript>I'm curious about its purpose and what generates it?
A search on Google doesn't yield much information.
After conducting a search, I found the answer in the second result which provides an explanation: https://dev.to/omher/building-react-app-with-module-federation-and-nextjsreact-1pkh. According to the source, it serves as a marker for Next to determine where to insert the CSS within the document.
The purpose of using an empty noscript tag is to keep it hidden from view in the DOM and prevent any interference with your page's layout.
To ensure the proper rendering of CSS, each subsequent application must include this specific tag. This tag allows the next application to locate it and render all required styles below.
Take a look at the following code snippet, which will be present in future builds of Next.js:
function App_App() {
return /*#__PURE__*/index_js_default().createElement(index_js_.Suspense, {
fallback: 'loading...'
}, /*#__PURE__*/index_js_default().createElement("noscript", {
id: "__next_css__DO_NOT_USE__"
}), /*#__PURE__*/index_js_default().createElement(MyApplication, null));
}You can also easily locate this tag by entering the following command in your browser console: $('#next_css__DO_NOT_USE')
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