Comment by nilslindemann

Just tested (ignoring AI search engines, non-english, non-free):

Search engines which require JavaScript:

Google, Bing, Ecosia, Yandex, Qwant, Gibiru, Presearch, Seekr, Swisscows, Yep, Openverse, Dogpile, Waldo

Search engines which do not require JavaScript:

DuckDuckGo, Yahoo Search, Brave Search, Startpage, AOL Search, giveWater, Mojeek