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Google, Microsoft, W3C and Samsung have already joined the party[0].

[0] https://blog.mozilla.org/blog/2017/10/18/mozilla-brings-micr...

If I need to google something JS or HTML related my query is usually "mdn ____".

DuckDuckGo has a bang that forwards to MDN directly:

!mdn ____

! means "not" to me, so I read that as "not mdn" as in "don't include mdn results"

“Not” in search queries is the minus sign “-” directly prepended to the word or phrase

Presuming you're entering that in your address bar, you can set a search keyword in your browser so it'll actually search MDN, not just do a plain search with the word "mdn" in it.

You can add it as search engine with search bar.

MDN is the OG greatest of all time.