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by simcop2387 1434 days ago
Umatrix from the author of ublock origin can do this. Not with a single click (it'll take two, one to enable and one to tell it to remember) but it's very close.

https://addons.mozilla.org/en-US/firefox/addon/umatrix/

1 comments

Clarifying, for those unfamiliar with it:

uMatrix permits enabling or disabling JS (and other website features: images, CSS, media, frames, XSS, ...) by domain or subdomain, including default allow/deny permissions should you choose.

You can also temporarily enable or disable specific permissions, and save those changes permanently should you choose.

It's fiddly, but good fiddly.