If you are using different styles which depend on the availability of javascript, then several modules and themes make use of the css class js on the <html> tag (for instance Better Exposed Filters → ). And I do this too. But I think, the js which add the class is called too late. It's situated in drupal.init.js which is injected at the bottom of the page. And if you have a site with huge amount of content or some heavy images or clean caches, then it can lead to the flickering of components which depends on the js class.
I have this FOUC too and can solve it by moving the snippet on the head of the page.
I would like to know your opinions.
Thank you & ciao
Ralf
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I think we should deprecate this class.
Themes can use the technique in
📌
Simplify js.module.css
Active
@media (scripting: enabled) and detect js support with CSS now.
Looks like there is already 📌 Remove usages of .js class from core Needs work . Shall we close this then?
Oh wow that's been open for ten years now. Yes closing this as duplicate.