How to selectively disable JavaScript in iOS?

In macOS, browsers like Chrome and Firefox can configure the NoScript extension to disable JavaScript by default, while providing a user customizable whitelist of domains for which JavaScript is still enabled. How can iOS users achieve this same per-domain JavaScript blocking behavior? I see the JavaScript on/off option for Safari, but that doesn't allow for customization. I see that Chrome and even Firefox have been ported to iOS, though they don't support extensions so that's worthless. I see the Purify app for blocking ads, but paying money to block ads is the most ridiculously late capitalism thing a consumer tard can do, **** that. How can iOS users block JS on most domains, while allowing for specific, user-controlled exceptions?